55100505099 has 4 divisors (see below), whose sum is σ = 73467340136. Its totient is φ = 36733670064.

The previous prime is 55100505073. The next prime is 55100505137. The reversal of 55100505099 is 99050500155.

It is a happy number.

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

It is not a de Polignac number, because 55100505099 - 2²⁰ = 55099456523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55100505049) 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, 9183417514 + ... + 9183417519.

It is an arithmetic number, because the mean of its divisors is an integer number (18366835034).

Almost surely, 2^55100505099 is an apocalyptic number.

55100505099 is a deficient number, since it is larger than the sum of its proper divisors (18366835037).

55100505099 is a wasteful number, since it uses less digits than its factorization.

55100505099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18366835036.

The product of its (nonzero) digits is 50625, while the sum is 39.

The spelling of 55100505099 in words is "fifty-five billion, one hundred million, five hundred five thousand, ninety-nine".