55677178779 has 8 divisors (see below), whose sum is σ = 74244263952. Its totient is φ = 37114106400.

The previous prime is 55677178759. The next prime is 55677178801. The reversal of 55677178779 is 97787177655.

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

It is not a de Polignac number, because 55677178779 - 2⁵ = 55677178747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55677178759) 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, 970672 + ... + 1026429.

It is an arithmetic number, because the mean of its divisors is an integer number (9280532994).

Almost surely, 2^55677178779 is an apocalyptic number.

55677178779 is a deficient number, since it is larger than the sum of its proper divisors (18567085173).

55677178779 is a wasteful number, since it uses less digits than its factorization.

55677178779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2006397.

The product of its digits is 181515600, while the sum is 69.

The spelling of 55677178779 in words is "fifty-five billion, six hundred seventy-seven million, one hundred seventy-eight thousand, seven hundred seventy-nine".