55386638600 has 24 divisors (see below), whose sum is σ = 128773935210. Its totient is φ = 22154655360.

The previous prime is 55386638599. The next prime is 55386638611. The reversal of 55386638600 is 683668355.

It can be written as a sum of positive squares in 3 ways, for example, as 26404300036 + 28982338564 = 162494^2 + 170242^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (50).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 138466397 + ... + 138466796.

Almost surely, 2^55386638600 is an apocalyptic number.

55386638600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55386638600 is an abundant number, since it is smaller than the sum of its proper divisors (73387296610).

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

55386638600 is a wasteful number, since it uses less digits than its factorization.

55386638600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276933209 (or 276933200 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 55386638600 in words is "fifty-five billion, three hundred eighty-six million, six hundred thirty-eight thousand, six hundred".