55509636460 has 48 divisors (see below), whose sum is σ = 116977416192. Its totient is φ = 22126424000.

The previous prime is 55509636449. The next prime is 55509636463. The reversal of 55509636460 is 6463690555.

It is a super-2 number, since 2×55509636460² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55509636463) by changing a digit.

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, 8470185 + ... + 8476735.

It is an arithmetic number, because the mean of its divisors is an integer number (2437029504).

Almost surely, 2^55509636460 is an apocalyptic number.

It is an amenable number.

55509636460 is an abundant number, since it is smaller than the sum of its proper divisors (61467779732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55509636460 is a wasteful number, since it uses less digits than its factorization.

55509636460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7974 (or 7972 counting only the distinct ones).

The product of its (nonzero) digits is 2916000, while the sum is 49.

The spelling of 55509636460 in words is "fifty-five billion, five hundred nine million, six hundred thirty-six thousand, four hundred sixty".