91572623963 has 8 divisors (see below), whose sum is σ = 96988434480. Its totient is φ = 86160056320.

The previous prime is 91572623851. The next prime is 91572623983. The reversal of 91572623963 is 36932627519.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91572623963 - 2¹⁸ = 91572361819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91572623983) 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 in 7 ways as a sum of consecutive naturals, for example, 752453 + ... + 865638.

It is an arithmetic number, because the mean of its divisors is an integer number (12123554310).

Almost surely, 2^91572623963 is an apocalyptic number.

91572623963 is a deficient number, since it is larger than the sum of its proper divisors (5415810517).

91572623963 is a wasteful number, since it uses less digits than its factorization.

91572623963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1621437.

The product of its digits is 3674160, while the sum is 53.

The spelling of 91572623963 in words is "ninety-one billion, five hundred seventy-two million, six hundred twenty-three thousand, nine hundred sixty-three".