65481931976 has 16 divisors (see below), whose sum is σ = 122787757440. Its totient is φ = 32738530000.

The previous prime is 65481931973. The next prime is 65481932027. The reversal of 65481931976 is 67913918456.

It is not an unprimeable number, because it can be changed into a prime (65481931973) 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, 187616 + ... + 407631.

It is an arithmetic number, because the mean of its divisors is an integer number (7674234840).

Almost surely, 2^65481931976 is an apocalyptic number.

It is an amenable number.

65481931976 is a deficient number, since it is larger than the sum of its proper divisors (57305825464).

65481931976 is a wasteful number, since it uses less digits than its factorization.

65481931976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609004 (or 609000 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 59.

The spelling of 65481931976 in words is "sixty-five billion, four hundred eighty-one million, nine hundred thirty-one thousand, nine hundred seventy-six".