15452105856 has 128 divisors (see below), whose sum is σ = 44871840000. Its totient is φ = 4672435200.

The previous prime is 15452105849. The next prime is 15452105861. The reversal of 15452105856 is 65850125451.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2104111 + ... + 2111441.

It is an arithmetic number, because the mean of its divisors is an integer number (350561250).

Almost surely, 2^15452105856 is an apocalyptic number.

15452105856 is a gapful number since it is divisible by the number (16) 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 15452105856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22435920000).

15452105856 is an abundant number, since it is smaller than the sum of its proper divisors (29419734144).

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

15452105856 is a wasteful number, since it uses less digits than its factorization.

15452105856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7858 (or 7846 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 42.

The spelling of 15452105856 in words is "fifteen billion, four hundred fifty-two million, one hundred five thousand, eight hundred fifty-six".