55431211445 has 16 divisors (see below), whose sum is σ = 68950517760. Its totient is φ = 42734899200.

The previous prime is 55431211417. The next prime is 55431211453. The reversal of 55431211445 is 54411213455.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-55431211445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 711116 + ... + 785205.

It is an arithmetic number, because the mean of its divisors is an integer number (4309407360).

Almost surely, 2^55431211445 is an apocalyptic number.

It is an amenable number.

55431211445 is a deficient number, since it is larger than the sum of its proper divisors (13519306315).

55431211445 is a wasteful number, since it uses less digits than its factorization.

55431211445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496596.

The product of its digits is 48000, while the sum is 35.

The spelling of 55431211445 in words is "fifty-five billion, four hundred thirty-one million, two hundred eleven thousand, four hundred forty-five".