55207657407 has 16 divisors (see below), whose sum is σ = 84171218432. Its totient is φ = 31530258720.

The previous prime is 55207657397. The next prime is 55207657433. The reversal of 55207657407 is 70475670255.

It is not a de Polignac number, because 55207657407 - 2⁷ = 55207657279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55207657447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 667243 + ... + 745404.

It is an arithmetic number, because the mean of its divisors is an integer number (5260701152).

Almost surely, 2^55207657407 is an apocalyptic number.

55207657407 is a deficient number, since it is larger than the sum of its proper divisors (28963561025).

55207657407 is a wasteful number, since it uses less digits than its factorization.

55207657407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414518.

The product of its (nonzero) digits is 2058000, while the sum is 48.

The spelling of 55207657407 in words is "fifty-five billion, two hundred seven million, six hundred fifty-seven thousand, four hundred seven".