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12979031802 = 2311894614793
BaseRepresentation
bin11000001011001110…
…00100111011111010
31020111112100010111120
430011213010323322
5203040113004202
65543521410110
7636426643602
oct140547047372
936445303446
1012979031802
115560363770
122622799936
1312bac3c999
148b1a6bc02
1550e6ae0bc
hex3059c4efa

12979031802 has 64 divisors (see below), whose sum is σ = 28704170880. Its totient is φ = 3879603200.

The previous prime is 12979031797. The next prime is 12979031833. The reversal of 12979031802 is 20813097921.

It is a super-3 number, since 3×129790318023 (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2705518 + ... + 2710310.

It is an arithmetic number, because the mean of its divisors is an integer number (448502670).

Almost surely, 212979031802 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12979031802, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14352085440).

12979031802 is an abundant number, since it is smaller than the sum of its proper divisors (15725139078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12979031802 is a wasteful number, since it uses less digits than its factorization.

12979031802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5359.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 12979031802 in words is "twelve billion, nine hundred seventy-nine million, thirty-one thousand, eight hundred two".

Divisors: 1 2 3 6 11 22 33 66 89 178 267 461 534 922 979 1383 1958 2766 2937 4793 5071 5874 9586 10142 14379 15213 28758 30426 41029 52723 82058 105446 123087 158169 246174 316338 426577 451319 853154 902638 1279731 1353957 2209573 2559462 2707914 4419146 4692347 6628719 9384694 13257438 14077041 24305303 28154082 48610606 72915909 145831818 196651997 393303994 589955991 1179911982 2163171967 4326343934 6489515901 12979031802