55115199830 has 16 divisors (see below), whose sum is σ = 99873183600. Its totient is φ = 21898119072.

The previous prime is 55115199823. The next prime is 55115199859. The reversal of 55115199830 is 3899151155.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18493544 + ... + 18496523.

It is an arithmetic number, because the mean of its divisors is an integer number (6242073975).

Almost surely, 2^55115199830 is an apocalyptic number.

55115199830 is a deficient number, since it is larger than the sum of its proper divisors (44757983770).

55115199830 is a wasteful number, since it uses less digits than its factorization.

55115199830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36990223.

The product of its (nonzero) digits is 243000, while the sum is 47.

The spelling of 55115199830 in words is "fifty-five billion, one hundred fifteen million, one hundred ninety-nine thousand, eight hundred thirty".