172045648937 has 2 divisors, whose sum is σ = 172045648938. Its totient is φ = 172045648936.

The previous prime is 172045648897. The next prime is 172045648979. The reversal of 172045648937 is 739846540271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103588066201 + 68457582736 = 321851^2 + 261644^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-172045648937 is a prime.

It is not a weakly prime, because it can be changed into another prime (172042648937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86022824468 + 86022824469.

It is an arithmetic number, because the mean of its divisors is an integer number (86022824469).

It is a 1-persistent number, because it is pandigital, but 2⋅172045648937 = 344091297874 is not.

Almost surely, 2^172045648937 is an apocalyptic number.

It is an amenable number.

172045648937 is a deficient number, since it is larger than the sum of its proper divisors (1).

172045648937 is an equidigital number, since it uses as much as digits as its factorization.

172045648937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10160640, while the sum is 56.

The spelling of 172045648937 in words is "one hundred seventy-two billion, forty-five million, six hundred forty-eight thousand, nine hundred thirty-seven".