161025924937 has 2 divisors, whose sum is σ = 161025924938. Its totient is φ = 161025924936.

The previous prime is 161025924869. The next prime is 161025924953. The reversal of 161025924937 is 739429520161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135824679936 + 25201245001 = 368544^2 + 158749^2 .

It is an emirp because it is prime and its reverse (739429520161) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161025924937 is a prime.

It is not a weakly prime, because it can be changed into another prime (161025924337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80512962468 + 80512962469.

It is an arithmetic number, because the mean of its divisors is an integer number (80512962469).

Almost surely, 2^161025924937 is an apocalyptic number.

It is an amenable number.

161025924937 is a deficient number, since it is larger than the sum of its proper divisors (1).

161025924937 is an equidigital number, since it uses as much as digits as its factorization.

161025924937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 161025924937 in words is "one hundred sixty-one billion, twenty-five million, nine hundred twenty-four thousand, nine hundred thirty-seven".