55499673600 has 702 divisors, whose sum is σ = 231431217030. Its totient is φ = 12675317760.

The previous prime is 55499673599. The next prime is 55499673617. The reversal of 55499673600 is 637699455.

55499673600 is a `hidden beast` number, since 5 + 549 + 9 + 67 + 36 + 0 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 16995815424 + 38503858176 = 130368^2 + 196224^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 45157786 + ... + 45159014.

Almost surely, 2^55499673600 is an apocalyptic number.

55499673600 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55499673600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115715608515).

55499673600 is an abundant number, since it is smaller than the sum of its proper divisors (175931543430).

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

55499673600 is a wasteful number, since it uses less digits than its factorization.

55499673600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283 (or 1246 counting only the distinct ones).

The product of its (nonzero) digits is 6123600, while the sum is 54.

The spelling of 55499673600 in words is "fifty-five billion, four hundred ninety-nine million, six hundred seventy-three thousand, six hundred".