20896915692 has 96 divisors (see below), whose sum is σ = 51700723200. Its totient is φ = 6551027712.

The previous prime is 20896915667. The next prime is 20896915709. The reversal of 20896915692 is 29651969802.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 29473434 + ... + 29474142.

It is an arithmetic number, because the mean of its divisors is an integer number (538549200).

Almost surely, 2^20896915692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20896915692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25850361600).

20896915692 is an abundant number, since it is smaller than the sum of its proper divisors (30803807508).

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

20896915692 is a wasteful number, since it uses less digits than its factorization.

20896915692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 4199040, while the sum is 57.

The spelling of 20896915692 in words is "twenty billion, eight hundred ninety-six million, nine hundred fifteen thousand, six hundred ninety-two".