55434401439 has 16 divisors (see below), whose sum is σ = 74235450240. Its totient is φ = 36794924000.

The previous prime is 55434401401. The next prime is 55434401447. The reversal of 55434401439 is 93410443455.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55434401439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55434401439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55434401489) 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, 2177824 + ... + 2203130.

It is an arithmetic number, because the mean of its divisors is an integer number (4639715640).

Almost surely, 2^55434401439 is an apocalyptic number.

55434401439 is a deficient number, since it is larger than the sum of its proper divisors (18801048801).

55434401439 is a wasteful number, since it uses less digits than its factorization.

55434401439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28470.

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 55434401439 in words is "fifty-five billion, four hundred thirty-four million, four hundred one thousand, four hundred thirty-nine".