16020587856 has 160 divisors (see below), whose sum is σ = 52694127360. Its totient is φ = 4079480832.

The previous prime is 16020587839. The next prime is 16020587897. The reversal of 16020587856 is 65878502061.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63436 + ... + 189908.

It is an arithmetic number, because the mean of its divisors is an integer number (329338296).

Almost surely, 2^16020587856 is an apocalyptic number.

16020587856 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 16020587856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26347063680).

16020587856 is an abundant number, since it is smaller than the sum of its proper divisors (36673539504).

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

16020587856 is a wasteful number, since it uses less digits than its factorization.

16020587856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126533 (or 126527 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 48.

The spelling of 16020587856 in words is "sixteen billion, twenty million, five hundred eighty-seven thousand, eight hundred fifty-six".