91960239073 has 4 divisors (see below), whose sum is σ = 94098849328. Its totient is φ = 89821628820.

The previous prime is 91960239047. The next prime is 91960239097. The reversal of 91960239073 is 37093206919.

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: 37093206919 = 40787 ⋅909437.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91960239073 is a prime.

It is a super-3 number, since 3×91960239073³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91960269073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069305063 + ... + 1069305148.

It is an arithmetic number, because the mean of its divisors is an integer number (23524712332).

Almost surely, 2^91960239073 is an apocalyptic number.

It is an amenable number.

91960239073 is a deficient number, since it is larger than the sum of its proper divisors (2138610255).

91960239073 is a wasteful number, since it uses less digits than its factorization.

91960239073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138610254.

The product of its (nonzero) digits is 551124, while the sum is 49.

The spelling of 91960239073 in words is "ninety-one billion, nine hundred sixty million, two hundred thirty-nine thousand, seventy-three".