72750722211931 has 2 divisors, whose sum is σ = 72750722211932. Its totient is φ = 72750722211930.

The previous prime is 72750722211847. The next prime is 72750722211941. The reversal of 72750722211931 is 13911222705727.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72750722211931 - 2¹⁷ = 72750722080859 is a prime.

It is a super-2 number, since 2×72750722211931² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72750722211941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36375361105965 + 36375361105966.

It is an arithmetic number, because the mean of its divisors is an integer number (36375361105966).

Almost surely, 2^{72750722211931} is an apocalyptic number.

72750722211931 is a deficient number, since it is larger than the sum of its proper divisors (1).

72750722211931 is an equidigital number, since it uses as much as digits as its factorization.

72750722211931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 740880, while the sum is 49.

The spelling of 72750722211931 in words is "seventy-two trillion, seven hundred fifty billion, seven hundred twenty-two million, two hundred eleven thousand, nine hundred thirty-one".