91744677644723 has 2 divisors, whose sum is σ = 91744677644724. Its totient is φ = 91744677644722.

The previous prime is 91744677644707. The next prime is 91744677644743. The reversal of 91744677644723 is 32744677644719.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91744677644723 - 2⁴ = 91744677644707 is a prime.

It is a super-2 number, since 2×91744677644723² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (91744677644743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45872338822361 + 45872338822362.

It is an arithmetic number, because the mean of its divisors is an integer number (45872338822362).

Almost surely, 2^{91744677644723} is an apocalyptic number.

91744677644723 is a deficient number, since it is larger than the sum of its proper divisors (1).

91744677644723 is an equidigital number, since it uses as much as digits as its factorization.

91744677644723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1194891264, while the sum is 71.

The spelling of 91744677644723 in words is "ninety-one trillion, seven hundred forty-four billion, six hundred seventy-seven million, six hundred forty-four thousand, seven hundred twenty-three".