156171117725061 has 32 divisors (see below), whose sum is σ = 219011671065600. Its totient is φ = 98849588198400.

The previous prime is 156171117725059. The next prime is 156171117725081. The reversal of 156171117725061 is 160527711171651.

156171117725061 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 156171117725061 - 2¹ = 156171117725059 is a prime.

It is a super-2 number, since 2×156171117725061² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156171117724995 and 156171117725013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156171117725081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99481965 + ... + 101039613.

It is an arithmetic number, because the mean of its divisors is an integer number (6844114720800).

Almost surely, 2^{156171117725061} is an apocalyptic number.

It is an amenable number.

156171117725061 is a deficient number, since it is larger than the sum of its proper divisors (62840553340539).

156171117725061 is a wasteful number, since it uses less digits than its factorization.

156171117725061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578077.

The product of its (nonzero) digits is 617400, while the sum is 51.

The spelling of 156171117725061 in words is "one hundred fifty-six trillion, one hundred seventy-one billion, one hundred seventeen million, seven hundred twenty-five thousand, sixty-one".