65972812611 has 32 divisors (see below), whose sum is σ = 97233619968. Its totient is φ = 39576176640.

The previous prime is 65972812583. The next prime is 65972812613. The reversal of 65972812611 is 11621827956.

It is a happy number.

It is not a de Polignac number, because 65972812611 - 2⁷ = 65972812483 is a prime.

It is a super-2 number, since 2×65972812611² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65972812613) 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, 2698635 + ... + 2722971.

It is an arithmetic number, because the mean of its divisors is an integer number (3038550624).

Almost surely, 2^65972812611 is an apocalyptic number.

65972812611 is a deficient number, since it is larger than the sum of its proper divisors (31260807357).

65972812611 is a wasteful number, since it uses less digits than its factorization.

65972812611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26691.

The product of its digits is 362880, while the sum is 48.

The spelling of 65972812611 in words is "sixty-five billion, nine hundred seventy-two million, eight hundred twelve thousand, six hundred eleven".