16615420896 has 48 divisors (see below), whose sum is σ = 43789310208. Its totient is φ = 5516400000.

The previous prime is 16615420859. The next prime is 16615420931. The reversal of 16615420896 is 69802451661.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 320680 + ... + 368871.

It is an arithmetic number, because the mean of its divisors is an integer number (912277296).

Almost surely, 2^16615420896 is an apocalyptic number.

16615420896 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16615420896 is an abundant number, since it is smaller than the sum of its proper divisors (27173889312).

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

16615420896 is a wasteful number, since it uses less digits than its factorization.

16615420896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689815 (or 689807 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 16615420896 in words is "sixteen billion, six hundred fifteen million, four hundred twenty thousand, eight hundred ninety-six".