55116551500 has 24 divisors (see below), whose sum is σ = 120374549568. Its totient is φ = 22046620400.

The previous prime is 55116551473. The next prime is 55116551507. The reversal of 55116551500 is 515561155.

It is not an unprimeable number, because it can be changed into a prime (55116551507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55116052 + ... + 55117051.

It is an arithmetic number, because the mean of its divisors is an integer number (5015606232).

Almost surely, 2^55116551500 is an apocalyptic number.

55116551500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55116551500 is an abundant number, since it is smaller than the sum of its proper divisors (65257998068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55116551500 is a wasteful number, since it uses less digits than its factorization.

55116551500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110233122 (or 110233110 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 34.

It can be divided in two parts, 5511655 and 1500, that added together give a palindrome (5513155).

The spelling of 55116551500 in words is "fifty-five billion, one hundred sixteen million, five hundred fifty-one thousand, five hundred".