54115320899 has 4 divisors (see below), whose sum is σ = 54116207664. Its totient is φ = 54114434136.

The previous prime is 54115320871. The next prime is 54115320913. The reversal of 54115320899 is 99802351145.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54115320899 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (54115320829) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344492 + ... + 476345.

It is an arithmetic number, because the mean of its divisors is an integer number (13529051916).

Almost surely, 2^54115320899 is an apocalyptic number.

54115320899 is a deficient number, since it is larger than the sum of its proper divisors (886765).

54115320899 is an equidigital number, since it uses as much as digits as its factorization.

54115320899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 886764.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 54115320899 in words is "fifty-four billion, one hundred fifteen million, three hundred twenty thousand, eight hundred ninety-nine".