55434252643 has 16 divisors (see below), whose sum is σ = 69127107840. Its totient is φ = 43186600800.

The previous prime is 55434252623. The next prime is 55434252659. The reversal of 55434252643 is 34625243455.

It is a de Polignac number, because none of the positive numbers 2^k-55434252643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55434252643.

It is not an unprimeable number, because it can be changed into a prime (55434252623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314013 + ... + 457681.

It is an arithmetic number, because the mean of its divisors is an integer number (4320444240).

Almost surely, 2^55434252643 is an apocalyptic number.

55434252643 is a deficient number, since it is larger than the sum of its proper divisors (13692855197).

55434252643 is a wasteful number, since it uses less digits than its factorization.

55434252643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148698.

The product of its digits is 1728000, while the sum is 43.

The spelling of 55434252643 in words is "fifty-five billion, four hundred thirty-four million, two hundred fifty-two thousand, six hundred forty-three".