156379917011531 has 2 divisors, whose sum is σ = 156379917011532. Its totient is φ = 156379917011530.

The previous prime is 156379917011491. The next prime is 156379917011537. The reversal of 156379917011531 is 135110719973651.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 156379917011531 - 2⁶ = 156379917011467 is a prime.

It is a super-2 number, since 2×156379917011531² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (156379917011537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78189958505765 + 78189958505766.

It is an arithmetic number, because the mean of its divisors is an integer number (78189958505766).

Almost surely, 2^{156379917011531} is an apocalyptic number.

156379917011531 is a deficient number, since it is larger than the sum of its proper divisors (1).

156379917011531 is an equidigital number, since it uses as much as digits as its factorization.

156379917011531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5358150, while the sum is 59.

The spelling of 156379917011531 in words is "one hundred fifty-six trillion, three hundred seventy-nine billion, nine hundred seventeen million, eleven thousand, five hundred thirty-one".