91395980053 has 4 divisors (see below), whose sum is σ = 104452548640. Its totient is φ = 78339411468.

The previous prime is 91395979973. The next prime is 91395980063. The reversal of 91395980053 is 35008959319.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35008959319 = 127 ⋅275661097.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91395980053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91395980063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6528284283 + ... + 6528284296.

It is an arithmetic number, because the mean of its divisors is an integer number (26113137160).

Almost surely, 2^91395980053 is an apocalyptic number.

It is an amenable number.

91395980053 is a deficient number, since it is larger than the sum of its proper divisors (13056568587).

91395980053 is a wasteful number, since it uses less digits than its factorization.

91395980053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056568586.

The product of its (nonzero) digits is 1312200, while the sum is 52.

The spelling of 91395980053 in words is "ninety-one billion, three hundred ninety-five million, nine hundred eighty thousand, fifty-three".