55379277664 has 48 divisors (see below), whose sum is σ = 109596896640. Its totient is φ = 27545333760.

The previous prime is 55379277619. The next prime is 55379277761. The reversal of 55379277664 is 46677297355.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 16475344 + ... + 16478704.

It is an arithmetic number, because the mean of its divisors is an integer number (2283268680).

Almost surely, 2^55379277664 is an apocalyptic number.

It is an amenable number.

55379277664 is a deficient number, since it is larger than the sum of its proper divisors (54217618976).

55379277664 is a wasteful number, since it uses less digits than its factorization.

55379277664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5903 (or 5895 counting only the distinct ones).

The product of its digits is 66679200, while the sum is 61.

The spelling of 55379277664 in words is "fifty-five billion, three hundred seventy-nine million, two hundred seventy-seven thousand, six hundred sixty-four".