55440435634 has 4 divisors (see below), whose sum is σ = 83160653454. Its totient is φ = 27720217816.

The previous prime is 55440435623. The next prime is 55440435641. The reversal of 55440435634 is 43653404455.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 49507585009 + 5932850625 = 222503^2 + 77025^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13860108907 + ... + 13860108910.

Almost surely, 2^55440435634 is an apocalyptic number.

55440435634 is a deficient number, since it is larger than the sum of its proper divisors (27720217820).

55440435634 is a wasteful number, since it uses less digits than its factorization.

55440435634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27720217819.

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

The spelling of 55440435634 in words is "fifty-five billion, four hundred forty million, four hundred thirty-five thousand, six hundred thirty-four".