631672566037 has 2 divisors, whose sum is σ = 631672566038. Its totient is φ = 631672566036.

The previous prime is 631672566011. The next prime is 631672566143. The reversal of 631672566037 is 730665276136.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 413820737521 + 217851828516 = 643289^2 + 466746^2 .

It is a cyclic number.

It is not a de Polignac number, because 631672566037 - 2³⁹ = 81916752149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (631672566737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315836283018 + 315836283019.

It is an arithmetic number, because the mean of its divisors is an integer number (315836283019).

Almost surely, 2^631672566037 is an apocalyptic number.

It is an amenable number.

631672566037 is a deficient number, since it is larger than the sum of its proper divisors (1).

631672566037 is an equidigital number, since it uses as much as digits as its factorization.

631672566037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 52.

The spelling of 631672566037 in words is "six hundred thirty-one billion, six hundred seventy-two million, five hundred sixty-six thousand, thirty-seven".