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12791493974 = 271753745773
BaseRepresentation
bin10111110100110111…
…01011010101010110
31020000110110012222002
423322123223111112
5202144110301344
65513142035302
7631661622230
oct137233532526
936013405862
1012791493974
115474512826
12258ba18b32
13128b129b5c
14894bb1250
154eceb744e
hex2fa6eb556

12791493974 has 16 divisors (see below), whose sum is σ = 23218174368. Its totient is φ = 5159594112.

The previous prime is 12791493973. The next prime is 12791493983. The reversal of 12791493974 is 47939419721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791493973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26872649 + ... + 26873124.

It is an arithmetic number, because the mean of its divisors is an integer number (1451135898).

Almost surely, 212791493974 is an apocalyptic number.

12791493974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12791493974 is a deficient number, since it is larger than the sum of its proper divisors (10426680394).

12791493974 is a wasteful number, since it uses less digits than its factorization.

12791493974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53745799.

The product of its digits is 3429216, while the sum is 56.

The spelling of 12791493974 in words is "twelve billion, seven hundred ninety-one million, four hundred ninety-three thousand, nine hundred seventy-four".

Divisors: 1 2 7 14 17 34 119 238 53745773 107491546 376220411 752440822 913678141 1827356282 6395746987 12791493974