55744687509 has 8 divisors (see below), whose sum is σ = 84944285760. Its totient is φ = 31854107136.

The previous prime is 55744687501. The next prime is 55744687513. The reversal of 55744687509 is 90578644755.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55744687509 - 2³ = 55744687501 is a prime.

It is a Smith number, since the sum of its digits (60) 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 not an unprimeable number, because it can be changed into a prime (55744687501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327254444 + ... + 1327254485.

It is an arithmetic number, because the mean of its divisors is an integer number (10618035720).

Almost surely, 2^55744687509 is an apocalyptic number.

It is an amenable number.

55744687509 is a deficient number, since it is larger than the sum of its proper divisors (29199598251).

55744687509 is a wasteful number, since it uses less digits than its factorization.

55744687509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2654508939.

The product of its (nonzero) digits is 42336000, while the sum is 60.

The spelling of 55744687509 in words is "fifty-five billion, seven hundred forty-four million, six hundred eighty-seven thousand, five hundred nine".