156256423311556 has 24 divisors (see below), whose sum is σ = 280839995014040. Its totient is φ = 76016435980032.

The previous prime is 156256423311517. The next prime is 156256423311557. The reversal of 156256423311556 is 655113324652651.

It can be written as a sum of positive squares in 4 ways, for example, as 32660196308100 + 123596227003456 = 5714910^2 + 11117384^2 .

It is a super-2 number, since 2×156256423311556² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156256423311497 and 156256423311506.

It is not an unprimeable number, because it can be changed into a prime (156256423311557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64904680 + ... + 67269088.

Almost surely, 2^{156256423311556} is an apocalyptic number.

It is an amenable number.

156256423311556 is a deficient number, since it is larger than the sum of its proper divisors (124583571702484).

156256423311556 is a wasteful number, since it uses less digits than its factorization.

156256423311556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2810983 (or 2810981 counting only the distinct ones).

The product of its digits is 19440000, while the sum is 55.

The spelling of 156256423311556 in words is "one hundred fifty-six trillion, two hundred fifty-six billion, four hundred twenty-three million, three hundred eleven thousand, five hundred fifty-six".