55477536517 has 32 divisors (see below), whose sum is σ = 66638315520. Its totient is φ = 45627079680.

The previous prime is 55477536509. The next prime is 55477536559. The reversal of 55477536517 is 71563577455.

It is not a de Polignac number, because 55477536517 - 2³ = 55477536509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55477537517) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6768892 + ... + 6777082.

It is an arithmetic number, because the mean of its divisors is an integer number (2082447360).

Almost surely, 2^55477536517 is an apocalyptic number.

It is an amenable number.

55477536517 is a deficient number, since it is larger than the sum of its proper divisors (11160779003).

55477536517 is a wasteful number, since it uses less digits than its factorization.

55477536517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9853.

The product of its digits is 15435000, while the sum is 55.

The spelling of 55477536517 in words is "fifty-five billion, four hundred seventy-seven million, five hundred thirty-six thousand, five hundred seventeen".