55721830677 has 8 divisors (see below), whose sum is σ = 75313524864. Its totient is φ = 36639011808.

The previous prime is 55721830663. The next prime is 55721830721. The reversal of 55721830677 is 77603812755.

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

It is not a de Polignac number, because 55721830677 - 2²³ = 55713442069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55721830657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127218573 + ... + 127219010.

It is an arithmetic number, because the mean of its divisors is an integer number (9414190608).

Almost surely, 2^55721830677 is an apocalyptic number.

It is an amenable number.

55721830677 is a deficient number, since it is larger than the sum of its proper divisors (19591694187).

55721830677 is a wasteful number, since it uses less digits than its factorization.

55721830677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254437659.

The product of its (nonzero) digits is 2469600, while the sum is 51.

The spelling of 55721830677 in words is "fifty-five billion, seven hundred twenty-one million, eight hundred thirty thousand, six hundred seventy-seven".