55154356443 has 12 divisors (see below), whose sum is σ = 79671625488. Its totient is φ = 36767622480.

The previous prime is 55154356441. The next prime is 55154356447. The reversal of 55154356443 is 34465345155.

It is a happy number.

55154356443 is a `hidden beast` number, since 5 + 5 + 1 + 5 + 43 + 564 + 43 = 666.

It is not a de Polignac number, because 55154356443 - 2¹ = 55154356441 is a prime.

It is a super-3 number, since 3×55154356443³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (55154356441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28738 + ... + 333368.

It is an arithmetic number, because the mean of its divisors is an integer number (6639302124).

Almost surely, 2^55154356443 is an apocalyptic number.

55154356443 is a deficient number, since it is larger than the sum of its proper divisors (24517269045).

55154356443 is a wasteful number, since it uses less digits than its factorization.

55154356443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324754 (or 324751 counting only the distinct ones).

The product of its digits is 2160000, while the sum is 45.

The spelling of 55154356443 in words is "fifty-five billion, one hundred fifty-four million, three hundred fifty-six thousand, four hundred forty-three".