55634739646 has 4 divisors (see below), whose sum is σ = 83452109472. Its totient is φ = 27817369822.

The previous prime is 55634739619. The next prime is 55634739653. The reversal of 55634739646 is 64693743655.

It is a happy number.

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

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13908684910 + ... + 13908684913.

It is an arithmetic number, because the mean of its divisors is an integer number (20863027368).

Almost surely, 2^55634739646 is an apocalyptic number.

55634739646 is a deficient number, since it is larger than the sum of its proper divisors (27817369826).

55634739646 is a wasteful number, since it uses less digits than its factorization.

55634739646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27817369825.

The product of its digits is 48988800, while the sum is 58.

The spelling of 55634739646 in words is "fifty-five billion, six hundred thirty-four million, seven hundred thirty-nine thousand, six hundred forty-six".