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12869977848 = 2337137997769
BaseRepresentation
bin10111111110001110…
…00100011011111000
31020012221010121121020
423333013010123320
5202324203242343
65525024142440
7633634002210
oct137707043370
936187117536
1012869977848
115504848932
1225b2167a20
1312a1479110
148a13a1240
15504d1bb83
hex2ff1c46f8

12869977848 has 256 divisors, whose sum is σ = 40567296000. Its totient is φ = 3312451584.

The previous prime is 12869977837. The next prime is 12869977849. The reversal of 12869977848 is 84877996821.

It is a super-2 number, since 2×128699778482 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12869977849) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16735608 + ... + 16736376.

It is an arithmetic number, because the mean of its divisors is an integer number (158466000).

Almost surely, 212869977848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12869977848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20283648000).

12869977848 is an abundant number, since it is smaller than the sum of its proper divisors (27697318152).

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

12869977848 is a wasteful number, since it uses less digits than its factorization.

12869977848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974 (or 970 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 69.

The spelling of 12869977848 in words is "twelve billion, eight hundred sixty-nine million, nine hundred seventy-seven thousand, eight hundred forty-eight".