72704612890043 has 2 divisors, whose sum is σ = 72704612890044. Its totient is φ = 72704612890042.

The previous prime is 72704612889989. The next prime is 72704612890051. The reversal of 72704612890043 is 34009821640727.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72704612890043 - 2¹⁰ = 72704612889019 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72704612890073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36352306445021 + 36352306445022.

It is an arithmetic number, because the mean of its divisors is an integer number (36352306445022).

Almost surely, 2^{72704612890043} is an apocalyptic number.

72704612890043 is a deficient number, since it is larger than the sum of its proper divisors (1).

72704612890043 is an equidigital number, since it uses as much as digits as its factorization.

72704612890043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 72704612890043 in words is "seventy-two trillion, seven hundred four billion, six hundred twelve million, eight hundred ninety thousand, forty-three".