155715002056 has 24 divisors (see below), whose sum is σ = 308141015670. Its totient is φ = 73759736448.

The previous prime is 155715001973. The next prime is 155715002077. The reversal of 155715002056 is 650200517551.

It can be written as a sum of positive squares in only one way, i.e., 102983228100 + 52731773956 = 320910^2 + 229634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26956081 + ... + 26961856.

Almost surely, 2^155715002056 is an apocalyptic number.

It is an amenable number.

155715002056 is a deficient number, since it is larger than the sum of its proper divisors (152426013614).

155715002056 is a wasteful number, since it uses less digits than its factorization.

155715002056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53917981 (or 53917958 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 37.

The spelling of 155715002056 in words is "one hundred fifty-five billion, seven hundred fifteen million, two thousand, fifty-six".