55331423505 has 24 divisors (see below), whose sum is σ = 96597795840. Its totient is φ = 29297786400.

The previous prime is 55331423501. The next prime is 55331423533. The reversal of 55331423505 is 50532413355.

55331423505 is a `hidden beast` number, since 5 + 5 + 3 + 3 + 142 + 3 + 505 = 666.

It is not a de Polignac number, because 55331423505 - 2² = 55331423501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55331423505.

It is not an unprimeable number, because it can be changed into a prime (55331423501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4416721 + ... + 4429230.

It is an arithmetic number, because the mean of its divisors is an integer number (4024908160).

Almost surely, 2^55331423505 is an apocalyptic number.

It is an amenable number.

55331423505 is a deficient number, since it is larger than the sum of its proper divisors (41266372335).

55331423505 is a wasteful number, since it uses less digits than its factorization.

55331423505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8846101 (or 8846098 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 36.

The spelling of 55331423505 in words is "fifty-five billion, three hundred thirty-one million, four hundred twenty-three thousand, five hundred five".