779116955551 has 8 divisors (see below), whose sum is σ = 850468189824. Its totient is φ = 707852791320.

The previous prime is 779116955521. The next prime is 779116955569. The reversal of 779116955551 is 155559611977.

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 779116955551 - 2¹⁵ = 779116922783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 779116955551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779116955521) 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, 21748795 + ... + 21784588.

It is an arithmetic number, because the mean of its divisors is an integer number (106308523728).

Almost surely, 2^779116955551 is an apocalyptic number.

779116955551 is a deficient number, since it is larger than the sum of its proper divisors (71351234273).

779116955551 is a wasteful number, since it uses less digits than its factorization.

779116955551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43535021.

The product of its digits is 14883750, while the sum is 61.

The spelling of 779116955551 in words is "seven hundred seventy-nine billion, one hundred sixteen million, nine hundred fifty-five thousand, five hundred fifty-one".