57684737956 has 12 divisors (see below), whose sum is σ = 101218932892. Its totient is φ = 28765042848.

The previous prime is 57684737939. The next prime is 57684737959. The reversal of 57684737956 is 65973748675.

It can be written as a sum of positive squares in 2 ways, for example, as 23298969600 + 34385768356 = 152640^2 + 185434^2 .

It is a junction number, because it is equal to n+sod(n) for n = 57684737891 and 57684737900.

It is not an unprimeable number, because it can be changed into a prime (57684737959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19329855 + ... + 19332838.

Almost surely, 2^57684737956 is an apocalyptic number.

It is an amenable number.

57684737956 is a deficient number, since it is larger than the sum of its proper divisors (43534194936).

57684737956 is a wasteful number, since it uses less digits than its factorization.

57684737956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38663070 (or 38663068 counting only the distinct ones).

The product of its digits is 266716800, while the sum is 67.

The spelling of 57684737956 in words is "fifty-seven billion, six hundred eighty-four million, seven hundred thirty-seven thousand, nine hundred fifty-six".