72738427292563 has 2 divisors, whose sum is σ = 72738427292564. Its totient is φ = 72738427292562.

The previous prime is 72738427292551. The next prime is 72738427292569. The reversal of 72738427292563 is 36529272483727.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72738427292563 is a prime.

It is not a weakly prime, because it can be changed into another prime (72738427292569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36369213646281 + 36369213646282.

It is an arithmetic number, because the mean of its divisors is an integer number (36369213646282).

Almost surely, 2^{72738427292563} is an apocalyptic number.

72738427292563 is a deficient number, since it is larger than the sum of its proper divisors (1).

72738427292563 is an equidigital number, since it uses as much as digits as its factorization.

72738427292563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 426746880, while the sum is 67.

The spelling of 72738427292563 in words is "seventy-two trillion, seven hundred thirty-eight billion, four hundred twenty-seven million, two hundred ninety-two thousand, five hundred sixty-three".