73649808931 has 2 divisors, whose sum is σ = 73649808932. Its totient is φ = 73649808930.

The previous prime is 73649808919. The next prime is 73649808941. The reversal of 73649808931 is 13980894637.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 73649808931 - 2²¹ = 73647711779 is a prime.

It is a super-2 number, since 2×73649808931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73649808941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36824904465 + 36824904466.

It is an arithmetic number, because the mean of its divisors is an integer number (36824904466).

Almost surely, 2^73649808931 is an apocalyptic number.

73649808931 is a deficient number, since it is larger than the sum of its proper divisors (1).

73649808931 is an equidigital number, since it uses as much as digits as its factorization.

73649808931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 73649808931 in words is "seventy-three billion, six hundred forty-nine million, eight hundred eight thousand, nine hundred thirty-one".