77669678797 has 4 divisors (see below), whose sum is σ = 77683409440. Its totient is φ = 77655948156.

The previous prime is 77669678783. The next prime is 77669678809. The reversal of 77669678797 is 79787696677.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77669678797 - 2¹⁹ = 77669154509 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 (77669678767) 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, 6856833 + ... + 6868150.

It is an arithmetic number, because the mean of its divisors is an integer number (19420852360).

Almost surely, 2^77669678797 is an apocalyptic number.

It is an amenable number.

77669678797 is a deficient number, since it is larger than the sum of its proper divisors (13730643).

77669678797 is a wasteful number, since it uses less digits than its factorization.

77669678797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13730642.

The product of its digits is 2352442176, while the sum is 79.

The spelling of 77669678797 in words is "seventy-seven billion, six hundred sixty-nine million, six hundred seventy-eight thousand, seven hundred ninety-seven".