16615105500 has 96 divisors (see below), whose sum is σ = 55295106048. Its totient is φ = 3797736000.

The previous prime is 16615105477. The next prime is 16615105547. The reversal of 16615105500 is 550151661.

It is a super-2 number, since 2×16615105500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 780696 + ... + 801695.

It is an arithmetic number, because the mean of its divisors is an integer number (575990688).

Almost surely, 2^16615105500 is an apocalyptic number.

16615105500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16615105500 is an abundant number, since it is smaller than the sum of its proper divisors (38680000548).

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

16615105500 is a wasteful number, since it uses less digits than its factorization.

16615105500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582420 (or 1582408 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 30.

The spelling of 16615105500 in words is "sixteen billion, six hundred fifteen million, one hundred five thousand, five hundred".