116520145631 has 16 divisors (see below), whose sum is σ = 117795686400. Its totient is φ = 115251773088.

The previous prime is 116520145583. The next prime is 116520145639. The reversal of 116520145631 is 136541025611.

It is a cyclic number.

It is not a de Polignac number, because 116520145631 - 2¹⁴ = 116520129247 is a prime.

It is a super-2 number, since 2×116520145631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 116520145591 and 116520145600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (116520145639) 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, 59056361 + ... + 59058333.

It is an arithmetic number, because the mean of its divisors is an integer number (7362230400).

Almost surely, 2^116520145631 is an apocalyptic number.

116520145631 is a deficient number, since it is larger than the sum of its proper divisors (1275540769).

116520145631 is a wasteful number, since it uses less digits than its factorization.

116520145631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 116520145631 in words is "one hundred sixteen billion, five hundred twenty million, one hundred forty-five thousand, six hundred thirty-one".