55777877755 has 8 divisors (see below), whose sum is σ = 69241503600. Its totient is φ = 43083602016.

The previous prime is 55777877731. The next prime is 55777877767.

55777877755 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 55777877755 - 2⁵ = 55777877723 is a prime.

It is a super-2 number, since 2×55777877755² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192337365 + ... + 192337654.

It is an arithmetic number, because the mean of its divisors is an integer number (8655187950).

Almost surely, 2^55777877755 is an apocalyptic number.

55777877755 is a deficient number, since it is larger than the sum of its proper divisors (13463625845).

55777877755 is a wasteful number, since it uses less digits than its factorization.

55777877755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384675053.

The product of its digits is 588245000, while the sum is 70.

The spelling of 55777877755 in words is "fifty-five billion, seven hundred seventy-seven million, eight hundred seventy-seven thousand, seven hundred fifty-five".