55133657432 has 64 divisors (see below), whose sum is σ = 121141923840. Its totient is φ = 23030150400.

The previous prime is 55133657431. The next prime is 55133657519. The reversal of 55133657432 is 23475633155.

It is a happy number.

55133657432 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55133657431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2484707 + ... + 2506797.

It is an arithmetic number, because the mean of its divisors is an integer number (1892842560).

Almost surely, 2^55133657432 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 55133657432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60570961920).

55133657432 is an abundant number, since it is smaller than the sum of its proper divisors (66008266408).

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

55133657432 is a wasteful number, since it uses less digits than its factorization.

55133657432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23232 (or 23228 counting only the distinct ones).

The product of its digits is 1134000, while the sum is 44.

The spelling of 55133657432 in words is "fifty-five billion, one hundred thirty-three million, six hundred fifty-seven thousand, four hundred thirty-two".