16442731566125 has 16 divisors (see below), whose sum is σ = 20520722224704. Its totient is φ = 13154061387600.

The previous prime is 16442731566109. The next prime is 16442731566179. The reversal of 16442731566125 is 52166513724461.

It is not a de Polignac number, because 16442731566125 - 2⁴ = 16442731566109 is a prime.

It is a super-3 number, since 3×16442731566125³ (a number of 41 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14102702 + ... + 15224048.

It is an arithmetic number, because the mean of its divisors is an integer number (1282545139044).

Almost surely, 2^{16442731566125} is an apocalyptic number.

It is an amenable number.

16442731566125 is a deficient number, since it is larger than the sum of its proper divisors (4077990658579).

16442731566125 is a wasteful number, since it uses less digits than its factorization.

16442731566125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1238669 (or 1238659 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 53.

The spelling of 16442731566125 in words is "sixteen trillion, four hundred forty-two billion, seven hundred thirty-one million, five hundred sixty-six thousand, one hundred twenty-five".