72544690739 has 2 divisors, whose sum is σ = 72544690740. Its totient is φ = 72544690738.

The previous prime is 72544690727. The next prime is 72544690753. The reversal of 72544690739 is 93709644527.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72544690739 is a prime.

It is a super-2 number, since 2×72544690739² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72544690709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36272345369 + 36272345370.

It is an arithmetic number, because the mean of its divisors is an integer number (36272345370).

Almost surely, 2^72544690739 is an apocalyptic number.

72544690739 is a deficient number, since it is larger than the sum of its proper divisors (1).

72544690739 is an equidigital number, since it uses as much as digits as its factorization.

72544690739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11430720, while the sum is 56.

The spelling of 72544690739 in words is "seventy-two billion, five hundred forty-four million, six hundred ninety thousand, seven hundred thirty-nine".