156720026255 has 16 divisors (see below), whose sum is σ = 211336171200. Its totient is φ = 110699897088.

The previous prime is 156720026251. The next prime is 156720026291. The reversal of 156720026255 is 552620027651.

It is a cyclic number.

It is not a de Polignac number, because 156720026255 - 2² = 156720026251 is a prime.

It is a super-2 number, since 2×156720026255² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156720026251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52413230 + ... + 52416219.

It is an arithmetic number, because the mean of its divisors is an integer number (13208510700).

Almost surely, 2^156720026255 is an apocalyptic number.

156720026255 is a deficient number, since it is larger than the sum of its proper divisors (54616144945).

156720026255 is a wasteful number, since it uses less digits than its factorization.

156720026255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104829490.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 156720026255 in words is "one hundred fifty-six billion, seven hundred twenty million, twenty-six thousand, two hundred fifty-five".