72715063061 has 2 divisors, whose sum is σ = 72715063062. Its totient is φ = 72715063060.

The previous prime is 72715063049. The next prime is 72715063079. The reversal of 72715063061 is 16036051727.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47919836836 + 24795226225 = 218906^2 + 157465^2 .

It is a cyclic number.

It is not a de Polignac number, because 72715063061 - 2⁶ = 72715062997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72715063021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36357531530 + 36357531531.

It is an arithmetic number, because the mean of its divisors is an integer number (36357531531).

Almost surely, 2^72715063061 is an apocalyptic number.

It is an amenable number.

72715063061 is a deficient number, since it is larger than the sum of its proper divisors (1).

72715063061 is an equidigital number, since it uses as much as digits as its factorization.

72715063061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52920, while the sum is 38.

The spelling of 72715063061 in words is "seventy-two billion, seven hundred fifteen million, sixty-three thousand, sixty-one".