55540320899 has 16 divisors (see below), whose sum is σ = 64801078272. Its totient is φ = 46614748128.

The previous prime is 55540320887. The next prime is 55540320931. The reversal of 55540320899 is 99802304555.

55540320899 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55540320899 - 2²⁴ = 55523543683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55540320809) 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, 37802 + ... + 335424.

It is an arithmetic number, because the mean of its divisors is an integer number (4050067392).

Almost surely, 2^55540320899 is an apocalyptic number.

55540320899 is a deficient number, since it is larger than the sum of its proper divisors (9260757373).

55540320899 is a wasteful number, since it uses less digits than its factorization.

55540320899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298186.

The product of its (nonzero) digits is 1944000, while the sum is 50.

The spelling of 55540320899 in words is "fifty-five billion, five hundred forty million, three hundred twenty thousand, eight hundred ninety-nine".