55477073623 has 4 divisors (see below), whose sum is σ = 55609477560. Its totient is φ = 55344669688.

The previous prime is 55477073609. The next prime is 55477073647. The reversal of 55477073623 is 32637077455.

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 55477073623 - 2²⁵ = 55443519191 is a prime.

It is a super-2 number, since 2×55477073623² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55477073023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66201340 + ... + 66202177.

It is an arithmetic number, because the mean of its divisors is an integer number (13902369390).

Almost surely, 2^55477073623 is an apocalyptic number.

55477073623 is a deficient number, since it is larger than the sum of its proper divisors (132403937).

55477073623 is a wasteful number, since it uses less digits than its factorization.

55477073623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132403936.

The product of its (nonzero) digits is 3704400, while the sum is 49.

The spelling of 55477073623 in words is "fifty-five billion, four hundred seventy-seven million, seventy-three thousand, six hundred twenty-three".