55377397599 has 4 divisors (see below), whose sum is σ = 73836530136. Its totient is φ = 36918265064.

The previous prime is 55377397591. The next prime is 55377397633. The reversal of 55377397599 is 99579377355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55377397599 - 2³ = 55377397591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55377397591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9229566264 + ... + 9229566269.

It is an arithmetic number, because the mean of its divisors is an integer number (18459132534).

Almost surely, 2^55377397599 is an apocalyptic number.

55377397599 is a deficient number, since it is larger than the sum of its proper divisors (18459132537).

55377397599 is a wasteful number, since it uses less digits than its factorization.

55377397599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459132536.

The product of its digits is 281302875, while the sum is 69.

The spelling of 55377397599 in words is "fifty-five billion, three hundred seventy-seven million, three hundred ninety-seven thousand, five hundred ninety-nine".