16155840960 has 672 divisors, whose sum is σ = 68493680640. Its totient is φ = 3570739200.

The previous prime is 16155840949. The next prime is 16155840973. The reversal of 16155840960 is 6904855161.

16155840960 is a `hidden beast` number, since 1 + 6 + 1 + 5 + 584 + 0 + 9 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×16155840960² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13123545 + ... + 13124775.

It is an arithmetic number, because the mean of its divisors is an integer number (101925120).

Almost surely, 2^16155840960 is an apocalyptic number.

16155840960 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 16155840960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34246840320).

16155840960 is an abundant number, since it is smaller than the sum of its proper divisors (52337839680).

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

16155840960 is a wasteful number, since it uses less digits than its factorization.

16155840960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 1279 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The spelling of 16155840960 in words is "sixteen billion, one hundred fifty-five million, eight hundred forty thousand, nine hundred sixty".