55177358545 has 16 divisors (see below), whose sum is σ = 67266194688. Its totient is φ = 43441881280.

The previous prime is 55177358539. The next prime is 55177358603. The reversal of 55177358545 is 54585377155.

It is a happy number.

It is not a de Polignac number, because 55177358545 - 2¹¹ = 55177356497 is a prime.

It is a Duffinian 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 15 ways as a sum of consecutive naturals, for example, 58212 + ... + 337258.

It is an arithmetic number, because the mean of its divisors is an integer number (4204137168).

Almost surely, 2^55177358545 is an apocalyptic number.

It is an amenable number.

55177358545 is a deficient number, since it is larger than the sum of its proper divisors (12088836143).

55177358545 is a wasteful number, since it uses less digits than its factorization.

55177358545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279680.

The product of its digits is 14700000, while the sum is 55.

The spelling of 55177358545 in words is "fifty-five billion, one hundred seventy-seven million, three hundred fifty-eight thousand, five hundred forty-five".