55609998699 has 8 divisors (see below), whose sum is σ = 74155394560. Its totient is φ = 37068967656.

The previous prime is 55609998679. The next prime is 55609998767. The reversal of 55609998699 is 99689990655.

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

It is not a de Polignac number, because 55609998699 - 2⁹ = 55609998187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55609998699.

It is not an unprimeable number, because it can be changed into a prime (55609998679) 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, 1061359 + ... + 1112520.

It is an arithmetic number, because the mean of its divisors is an integer number (9269424320).

Almost surely, 2^55609998699 is an apocalyptic number.

55609998699 is a deficient number, since it is larger than the sum of its proper divisors (18545395861).

55609998699 is a wasteful number, since it uses less digits than its factorization.

55609998699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2182409.

The product of its (nonzero) digits is 425152800, while the sum is 75.

The spelling of 55609998699 in words is "fifty-five billion, six hundred nine million, nine hundred ninety-eight thousand, six hundred ninety-nine".