91572623983 has 2 divisors, whose sum is σ = 91572623984. Its totient is φ = 91572623982.

The previous prime is 91572623851. The next prime is 91572624023. The reversal of 91572623983 is 38932627519.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91572623983 - 2¹³ = 91572615791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91572633983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45786311991 + 45786311992.

It is an arithmetic number, because the mean of its divisors is an integer number (45786311992).

Almost surely, 2^91572623983 is an apocalyptic number.

91572623983 is a deficient number, since it is larger than the sum of its proper divisors (1).

91572623983 is an equidigital number, since it uses as much as digits as its factorization.

91572623983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 55.

The spelling of 91572623983 in words is "ninety-one billion, five hundred seventy-two million, six hundred twenty-three thousand, nine hundred eighty-three".