91530672783 has 8 divisors (see below), whose sum is σ = 133135524096. Its totient is φ = 55473135000.

The previous prime is 91530672773. The next prime is 91530672797. The reversal of 91530672783 is 38727603519.

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

It is not a de Polignac number, because 91530672783 - 2⁹ = 91530672271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91530672763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1386828343 + ... + 1386828408.

It is an arithmetic number, because the mean of its divisors is an integer number (16641940512).

Almost surely, 2^91530672783 is an apocalyptic number.

91530672783 is a deficient number, since it is larger than the sum of its proper divisors (41604851313).

91530672783 is a wasteful number, since it uses less digits than its factorization.

91530672783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2773656765.

The product of its (nonzero) digits is 1905120, while the sum is 51.

The spelling of 91530672783 in words is "ninety-one billion, five hundred thirty million, six hundred seventy-two thousand, seven hundred eighty-three".