65662979961 has 8 divisors (see below), whose sum is σ = 92700677664. Its totient is φ = 41200301120.

The previous prime is 65662979957. The next prime is 65662979989. The reversal of 65662979961 is 16997926656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 65662979961 - 2² = 65662979957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65662979892 and 65662979901.

It is not an unprimeable number, because it can be changed into a prime (65662979861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643754655 + ... + 643754756.

It is an arithmetic number, because the mean of its divisors is an integer number (11587584708).

Almost surely, 2^65662979961 is an apocalyptic number.

It is an amenable number.

65662979961 is a deficient number, since it is larger than the sum of its proper divisors (27037697703).

65662979961 is a wasteful number, since it uses less digits than its factorization.

65662979961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287509431.

The product of its digits is 66134880, while the sum is 66.

The spelling of 65662979961 in words is "sixty-five billion, six hundred sixty-two million, nine hundred seventy-nine thousand, nine hundred sixty-one".