16610010500 has 48 divisors (see below), whose sum is σ = 36299001648. Its totient is φ = 6639840000.

The previous prime is 16610010499. The next prime is 16610010509. The reversal of 16610010500 is 501001661.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 13992050944 + 2617959556 = 118288^2 + 51166^2 .

It is a super-2 number, since 2×16610010500² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (16610010509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 860960 + ... + 880040.

It is an arithmetic number, because the mean of its divisors is an integer number (756229201).

Almost surely, 2^16610010500 is an apocalyptic number.

16610010500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16610010500 is an abundant number, since it is smaller than the sum of its proper divisors (19688991148).

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

16610010500 is a wasteful number, since it uses less digits than its factorization.

16610010500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20841 (or 20829 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The spelling of 16610010500 in words is "sixteen billion, six hundred ten million, ten thousand, five hundred".