16020784456 has 32 divisors (see below), whose sum is σ = 30668984640. Its totient is φ = 7843013568.

The previous prime is 16020784433. The next prime is 16020784487. The reversal of 16020784456 is 65448702061.

It is a super-2 number, since 2×16020784456² (a number of 21 digits) contains 22 as substring.

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, 167695 + ... + 245281.

It is an arithmetic number, because the mean of its divisors is an integer number (958405770).

Almost surely, 2^16020784456 is an apocalyptic number.

It is an amenable number.

16020784456 is a deficient number, since it is larger than the sum of its proper divisors (14648200184).

16020784456 is a wasteful number, since it uses less digits than its factorization.

16020784456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78133 (or 78129 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 43.

The spelling of 16020784456 in words is "sixteen billion, twenty million, seven hundred eighty-four thousand, four hundred fifty-six".