32161432155631 has 2 divisors, whose sum is σ = 32161432155632. Its totient is φ = 32161432155630.

The previous prime is 32161432155581. The next prime is 32161432155649. The reversal of 32161432155631 is 13655123416123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 32161432155631 - 2³⁹ = 31611676341743 is a prime.

It is a super-2 number, since 2×32161432155631² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (32161432155131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16080716077815 + 16080716077816.

It is an arithmetic number, because the mean of its divisors is an integer number (16080716077816).

Almost surely, 2^{32161432155631} is an apocalyptic number.

32161432155631 is a deficient number, since it is larger than the sum of its proper divisors (1).

32161432155631 is an equidigital number, since it uses as much as digits as its factorization.

32161432155631 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 32161432155631 in words is "thirty-two trillion, one hundred sixty-one billion, four hundred thirty-two million, one hundred fifty-five thousand, six hundred thirty-one".