57405686402 has 4 divisors (see below), whose sum is σ = 86108529606. Its totient is φ = 28702843200.

The previous prime is 57405686341. The next prime is 57405686449. The reversal of 57405686402 is 20468650475.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45552791761 + 11852894641 = 213431^2 + 108871^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14351421599 + ... + 14351421602.

Almost surely, 2^57405686402 is an apocalyptic number.

57405686402 is a deficient number, since it is larger than the sum of its proper divisors (28702843204).

57405686402 is a wasteful number, since it uses less digits than its factorization.

57405686402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28702843203.

The product of its (nonzero) digits is 1612800, while the sum is 47.

The spelling of 57405686402 in words is "fifty-seven billion, four hundred five million, six hundred eighty-six thousand, four hundred two".