3897956177856 has 140 divisors (see below), whose sum is σ = 12443591386072. Its totient is φ = 1199371110912.

The previous prime is 3897956177837. The next prime is 3897956177873. The reversal of 3897956177856 is 6587716597983.

3897956177856 is a `hidden beast` number, since 389 + 7 + 95 + 6 + 1 + 77 + 85 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28852630 + ... + 28987413.

Almost surely, 2^{3897956177856} is an apocalyptic number.

3897956177856 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

3897956177856 is an abundant number, since it is smaller than the sum of its proper divisors (8545635208216).

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

3897956177856 is a wasteful number, since it uses less digits than its factorization.

3897956177856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57840080 (or 57840061 counting only the distinct ones).

The product of its digits is 4800902400, while the sum is 81.

The spelling of 3897956177856 in words is "three trillion, eight hundred ninety-seven billion, nine hundred fifty-six million, one hundred seventy-seven thousand, eight hundred fifty-six".