77620612065 has 8 divisors (see below), whose sum is σ = 124192979328. Its totient is φ = 41397659760.

The previous prime is 77620612039. The next prime is 77620612081. The reversal of 77620612065 is 56021602677.

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

It is not a de Polignac number, because 77620612065 - 2⁵ = 77620612033 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2587353721 + ... + 2587353750.

It is an arithmetic number, because the mean of its divisors is an integer number (15524122416).

Almost surely, 2^77620612065 is an apocalyptic number.

It is an amenable number.

77620612065 is a deficient number, since it is larger than the sum of its proper divisors (46572367263).

77620612065 is a wasteful number, since it uses less digits than its factorization.

77620612065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5174707479.

The product of its (nonzero) digits is 211680, while the sum is 42.

The spelling of 77620612065 in words is "seventy-seven billion, six hundred twenty million, six hundred twelve thousand, sixty-five".