55606216400 has 60 divisors (see below), whose sum is σ = 152678790432. Its totient is φ = 19064987520.

The previous prime is 55606216397. The next prime is 55606216433. The reversal of 55606216400 is 461260655.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9926882 + ... + 9932481.

Almost surely, 2^55606216400 is an apocalyptic number.

55606216400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55606216400 is an abundant number, since it is smaller than the sum of its proper divisors (97072574032).

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

55606216400 is a wasteful number, since it uses less digits than its factorization.

55606216400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19859388 (or 19859377 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 55606216400 in words is "fifty-five billion, six hundred six million, two hundred sixteen thousand, four hundred".