161316534526 has 24 divisors (see below), whose sum is σ = 282954646656. Its totient is φ = 68773682880.

The previous prime is 161316534503. The next prime is 161316534551. The reversal of 161316534526 is 625435613161.

It is a super-2 number, since 2×161316534526² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4290411 + ... + 4327846.

It is an arithmetic number, because the mean of its divisors is an integer number (11789776944).

Almost surely, 2^161316534526 is an apocalyptic number.

161316534526 is a deficient number, since it is larger than the sum of its proper divisors (121638112130).

161316534526 is a wasteful number, since it uses less digits than its factorization.

161316534526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8618464 (or 8618457 counting only the distinct ones).

The product of its digits is 388800, while the sum is 43.

The spelling of 161316534526 in words is "one hundred sixty-one billion, three hundred sixteen million, five hundred thirty-four thousand, five hundred twenty-six".