65673356961 has 8 divisors (see below), whose sum is σ = 87571521664. Its totient is φ = 43778715120.

The previous prime is 65673356951. The next prime is 65673356963. The reversal of 65673356961 is 16965337656.

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

It is not a de Polignac number, because 65673356961 - 2⁵ = 65673356929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65673356963) 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, 836905 + ... + 912006.

It is an arithmetic number, because the mean of its divisors is an integer number (10946440208).

Almost surely, 2^65673356961 is an apocalyptic number.

It is an amenable number.

65673356961 is a deficient number, since it is larger than the sum of its proper divisors (21898164703).

65673356961 is a wasteful number, since it uses less digits than its factorization.

65673356961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1761431.

The product of its digits is 18370800, while the sum is 57.

The spelling of 65673356961 in words is "sixty-five billion, six hundred seventy-three million, three hundred fifty-six thousand, nine hundred sixty-one".