72387902441 has 2 divisors, whose sum is σ = 72387902442. Its totient is φ = 72387902440.

The previous prime is 72387902359. The next prime is 72387902567. The reversal of 72387902441 is 14420978327.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61110312025 + 11277590416 = 247205^2 + 106196^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72387902441 is a prime.

It is not a weakly prime, because it can be changed into another prime (72387902941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36193951220 + 36193951221.

It is an arithmetic number, because the mean of its divisors is an integer number (36193951221).

Almost surely, 2^72387902441 is an apocalyptic number.

It is an amenable number.

72387902441 is a deficient number, since it is larger than the sum of its proper divisors (1).

72387902441 is an equidigital number, since it uses as much as digits as its factorization.

72387902441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 677376, while the sum is 47.

The spelling of 72387902441 in words is "seventy-two billion, three hundred eighty-seven million, nine hundred two thousand, four hundred forty-one".