55126744409 has 32 divisors (see below), whose sum is σ = 63912032640. Its totient is φ = 47472384960.

The previous prime is 55126744399. The next prime is 55126744411. The reversal of 55126744409 is 90444762155.

It is a de Polignac number, because none of the positive numbers 2^k-55126744409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55126744429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2032274 + ... + 2059220.

It is an arithmetic number, because the mean of its divisors is an integer number (1997251020).

Almost surely, 2^55126744409 is an apocalyptic number.

It is an amenable number.

55126744409 is a deficient number, since it is larger than the sum of its proper divisors (8785288231).

55126744409 is a wasteful number, since it uses less digits than its factorization.

55126744409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27062 (or 27040 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 55126744409 in words is "fifty-five billion, one hundred twenty-six million, seven hundred forty-four thousand, four hundred nine".