55431563416 has 32 divisors (see below), whose sum is σ = 105716754000. Its totient is φ = 27240615936.

The previous prime is 55431563413. The next prime is 55431563423. The reversal of 55431563416 is 61436513455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431563413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3470200 + ... + 3486136.

Almost surely, 2^55431563416 is an apocalyptic number.

It is an amenable number.

55431563416 is a deficient number, since it is larger than the sum of its proper divisors (50285190584).

55431563416 is a wasteful number, since it uses less digits than its factorization.

55431563416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23371 (or 23367 counting only the distinct ones).

The product of its digits is 648000, while the sum is 43.

The spelling of 55431563416 in words is "fifty-five billion, four hundred thirty-one million, five hundred sixty-three thousand, four hundred sixteen".