55509136455 has 16 divisors (see below), whose sum is σ = 91679606784. Its totient is φ = 28649876640.

The previous prime is 55509136453. The next prime is 55509136469. The reversal of 55509136455 is 55463190555.

55509136455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55509136455 - 2¹ = 55509136453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55509136453) 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, 59686779 + ... + 59687708.

It is an arithmetic number, because the mean of its divisors is an integer number (5729975424).

Almost surely, 2^55509136455 is an apocalyptic number.

55509136455 is a deficient number, since it is larger than the sum of its proper divisors (36170470329).

55509136455 is a wasteful number, since it uses less digits than its factorization.

55509136455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119374526.

The product of its (nonzero) digits is 2025000, while the sum is 48.

The spelling of 55509136455 in words is "fifty-five billion, five hundred nine million, one hundred thirty-six thousand, four hundred fifty-five".