55431369576 has 576 divisors, whose sum is σ = 185924044800. Its totient is φ = 15305500800.

The previous prime is 55431369563. The next prime is 55431369577. The reversal of 55431369576 is 67596313455.

55431369576 is a `hidden beast` number, since 5 + 5 + 4 + 3 + 1 + 3 + 69 + 576 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (55431369577) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 340069671 + ... + 340069833.

It is an arithmetic number, because the mean of its divisors is an integer number (322784800).

Almost surely, 2^55431369576 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 55431369576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92962022400).

55431369576 is an abundant number, since it is smaller than the sum of its proper divisors (130492675224).

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

55431369576 is a wasteful number, since it uses less digits than its factorization.

55431369576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254 (or 229 counting only the distinct ones).

The product of its digits is 10206000, while the sum is 54.

The spelling of 55431369576 in words is "fifty-five billion, four hundred thirty-one million, three hundred sixty-nine thousand, five hundred seventy-six".