16155505500 has 96 divisors (see below), whose sum is σ = 47511067968. Its totient is φ = 4265440000.

The previous prime is 16155505481. The next prime is 16155505507. The reversal of 16155505500 is 550555161.

It is a super-2 number, since 2×16155505500² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16155505507) 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 31 ways as a sum of consecutive naturals, for example, 98182 + ... + 204818.

It is an arithmetic number, because the mean of its divisors is an integer number (494906958).

Almost surely, 2^16155505500 is an apocalyptic number.

16155505500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16155505500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23755533984).

16155505500 is an abundant number, since it is smaller than the sum of its proper divisors (31355562468).

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

16155505500 is a wasteful number, since it uses less digits than its factorization.

16155505500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106760 (or 106748 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 33.

The spelling of 16155505500 in words is "sixteen billion, one hundred fifty-five million, five hundred five thousand, five hundred".