55421816996 has 24 divisors (see below), whose sum is σ = 119370068160. Its totient is φ = 21925114272.

The previous prime is 55421816963. The next prime is 55421817103. The reversal of 55421816996 is 69961812455.

55421816996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×55421816996² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76128506 + ... + 76129233.

It is an arithmetic number, because the mean of its divisors is an integer number (4973752840).

Almost surely, 2^55421816996 is an apocalyptic number.

It is an amenable number.

55421816996 is an abundant number, since it is smaller than the sum of its proper divisors (63948251164).

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

55421816996 is a wasteful number, since it uses less digits than its factorization.

55421816996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152257763 (or 152257761 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 56.

The spelling of 55421816996 in words is "fifty-five billion, four hundred twenty-one million, eight hundred sixteen thousand, nine hundred ninety-six".