56402145818 has 4 divisors (see below), whose sum is σ = 84603218730. Its totient is φ = 28201072908.

The previous prime is 56402145797. The next prime is 56402145857. The reversal of 56402145818 is 81854120465.

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., 31618885489 + 24783260329 = 177817^2 + 157427^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14100536453 + ... + 14100536456.

Almost surely, 2^56402145818 is an apocalyptic number.

56402145818 is a deficient number, since it is larger than the sum of its proper divisors (28201072912).

56402145818 is a wasteful number, since it uses less digits than its factorization.

56402145818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28201072911.

The product of its (nonzero) digits is 307200, while the sum is 44.

The spelling of 56402145818 in words is "fifty-six billion, four hundred two million, one hundred forty-five thousand, eight hundred eighteen".