77616261677 has 8 divisors (see below), whose sum is σ = 77743384320. Its totient is φ = 77489223120.

The previous prime is 77616261659. The next prime is 77616261683.

77616261677 is nontrivially palindromic in base 10.

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 77616261677 - 2¹² = 77616257581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77616261607) 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, 1979927 + ... + 2018747.

It is an arithmetic number, because the mean of its divisors is an integer number (9717923040).

Almost surely, 2^77616261677 is an apocalyptic number.

It is an amenable number.

77616261677 is a deficient number, since it is larger than the sum of its proper divisors (127122643).

77616261677 is a wasteful number, since it uses less digits than its factorization.

77616261677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42043.

The product of its digits is 6223392, while the sum is 56.

The spelling of 77616261677 in words is "seventy-seven billion, six hundred sixteen million, two hundred sixty-one thousand, six hundred seventy-seven".