72631867001 has 2 divisors, whose sum is σ = 72631867002. Its totient is φ = 72631867000.

The previous prime is 72631866997. The next prime is 72631867013. The reversal of 72631867001 is 10076813627.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66863616400 + 5768250601 = 258580^2 + 75949^2 .

It is a cyclic number.

It is not a de Polignac number, because 72631867001 - 2² = 72631866997 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72631867001.

It is not a weakly prime, because it can be changed into another prime (72631864001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36315933500 + 36315933501.

It is an arithmetic number, because the mean of its divisors is an integer number (36315933501).

Almost surely, 2^72631867001 is an apocalyptic number.

It is an amenable number.

72631867001 is a deficient number, since it is larger than the sum of its proper divisors (1).

72631867001 is an equidigital number, since it uses as much as digits as its factorization.

72631867001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 72631867001 in words is "seventy-two billion, six hundred thirty-one million, eight hundred sixty-seven thousand, one".