65972296491 has 32 divisors (see below), whose sum is σ = 97213063680. Its totient is φ = 39583931904.

The previous prime is 65972296487. The next prime is 65972296493. The reversal of 65972296491 is 19469227956.

It is not a de Polignac number, because 65972296491 - 2² = 65972296487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65972296493) 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 31 ways as a sum of consecutive naturals, for example, 7489896 + ... + 7498698.

It is an arithmetic number, because the mean of its divisors is an integer number (3037908240).

Almost surely, 2^65972296491 is an apocalyptic number.

65972296491 is a deficient number, since it is larger than the sum of its proper divisors (31240767189).

65972296491 is a wasteful number, since it uses less digits than its factorization.

65972296491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15235.

The product of its digits is 14696640, while the sum is 60.

The spelling of 65972296491 in words is "sixty-five billion, nine hundred seventy-two million, two hundred ninety-six thousand, four hundred ninety-one".