55418144950 has 72 divisors (see below), whose sum is σ = 120122737992. Its totient is φ = 18966286080.

The previous prime is 55418144941. The next prime is 55418144953. The reversal of 55418144950 is 5944181455.

It is a self number, because there is not a number n which added to its sum of digits gives 55418144950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55418144953) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1359262 + ... + 1399438.

It is an arithmetic number, because the mean of its divisors is an integer number (1668371361).

Almost surely, 2^55418144950 is an apocalyptic number.

55418144950 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

55418144950 is an abundant number, since it is smaller than the sum of its proper divisors (64704593042).

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

55418144950 is a wasteful number, since it uses less digits than its factorization.

55418144950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40766 (or 40754 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 46.

The spelling of 55418144950 in words is "fifty-five billion, four hundred eighteen million, one hundred forty-four thousand, nine hundred fifty".