72672400063631 has 2 divisors, whose sum is σ = 72672400063632. Its totient is φ = 72672400063630.

The previous prime is 72672400063573. The next prime is 72672400063663. The reversal of 72672400063631 is 13636000427627.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72672400063631 - 2³⁰ = 72671326321807 is a prime.

It is a super-2 number, since 2×72672400063631² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72672400063031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36336200031815 + 36336200031816.

It is an arithmetic number, because the mean of its divisors is an integer number (36336200031816).

Almost surely, 2^{72672400063631} is an apocalyptic number.

72672400063631 is a deficient number, since it is larger than the sum of its proper divisors (1).

72672400063631 is an equidigital number, since it uses as much as digits as its factorization.

72672400063631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 72672400063631 in words is "seventy-two trillion, six hundred seventy-two billion, four hundred million, sixty-three thousand, six hundred thirty-one".