55623401984 has 80 divisors (see below), whose sum is σ = 115165902720. Its totient is φ = 26820218880.

The previous prime is 55623401971. The next prime is 55623402001. The reversal of 55623401984 is 48910432655.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct 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, 1723274 + ... + 1755254.

It is an arithmetic number, because the mean of its divisors is an integer number (1439573784).

Almost surely, 2^55623401984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55623401984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57582951360).

55623401984 is an abundant number, since it is smaller than the sum of its proper divisors (59542500736).

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

55623401984 is an equidigital number, since it uses as much as digits as its factorization.

55623401984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32121 (or 32105 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 47.

The spelling of 55623401984 in words is "fifty-five billion, six hundred twenty-three million, four hundred one thousand, nine hundred eighty-four".