163516166131631 has 32 divisors (see below), whose sum is σ = 177030584156160. Its totient is φ = 150463454860800.

The previous prime is 163516166131621. The next prime is 163516166131667. The reversal of 163516166131631 is 136131661615361.

It is not a de Polignac number, because 163516166131631 - 2³⁸ = 163241288224687 is a prime.

It is a super-2 number, since 2×163516166131631² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 163516166131631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163516166131601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879418685 + ... + 879604601.

It is an arithmetic number, because the mean of its divisors is an integer number (5532205754880).

Almost surely, 2^{163516166131631} is an apocalyptic number.

163516166131631 is a deficient number, since it is larger than the sum of its proper divisors (13514418024529).

163516166131631 is a wasteful number, since it uses less digits than its factorization.

163516166131631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190775.

The product of its digits is 1049760, while the sum is 50.

The spelling of 163516166131631 in words is "one hundred sixty-three trillion, five hundred sixteen billion, one hundred sixty-six million, one hundred thirty-one thousand, six hundred thirty-one".