972837279091 has 4 divisors (see below), whose sum is σ = 973441903000. Its totient is φ = 972232655184.

The previous prime is 972837279077. The next prime is 972837279101. The reversal of 972837279091 is 190972738279.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 190972738279 = 17 ⋅11233690487.

It is a cyclic number.

It is not a de Polignac number, because 972837279091 - 2²³ = 972828890483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (972837270091) 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, 302309541 + ... + 302312758.

It is an arithmetic number, because the mean of its divisors is an integer number (243360475750).

Almost surely, 2^972837279091 is an apocalyptic number.

972837279091 is a deficient number, since it is larger than the sum of its proper divisors (604623909).

972837279091 is a wasteful number, since it uses less digits than its factorization.

972837279091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604623908.

The product of its (nonzero) digits is 24004512, while the sum is 64.

The spelling of 972837279091 in words is "nine hundred seventy-two billion, eight hundred thirty-seven million, two hundred seventy-nine thousand, ninety-one".