16100165500 has 24 divisors (see below), whose sum is σ = 35162762544. Its totient is φ = 6440066000.

The previous prime is 16100165491. The next prime is 16100165513. The reversal of 16100165500 is 556100161.

It is a Harshad number since it is a multiple of its sum of digits (25).

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, 16099666 + ... + 16100665.

It is an arithmetic number, because the mean of its divisors is an integer number (1465115106).

Almost surely, 2^16100165500 is an apocalyptic number.

16100165500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16100165500 is an abundant number, since it is smaller than the sum of its proper divisors (19062597044).

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

16100165500 is a wasteful number, since it uses less digits than its factorization.

16100165500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32200350 (or 32200338 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

Adding to 16100165500 its reverse (556100161), we get a palindrome (16656265661).

The spelling of 16100165500 in words is "sixteen billion, one hundred million, one hundred sixty-five thousand, five hundred".