21096703290 has 128 divisors (see below), whose sum is σ = 56633230080. Its totient is φ = 4995606528.

The previous prime is 21096703289. The next prime is 21096703297. The reversal of 21096703290 is 9230769012.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (21096703297) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1276057 + ... + 1292483.

It is an arithmetic number, because the mean of its divisors is an integer number (442447110).

Almost surely, 2^21096703290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21096703290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28316615040).

21096703290 is an abundant number, since it is smaller than the sum of its proper divisors (35536526790).

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

21096703290 is a wasteful number, since it uses less digits than its factorization.

21096703290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16576.

The product of its (nonzero) digits is 40824, while the sum is 39.

The spelling of 21096703290 in words is "twenty-one billion, ninety-six million, seven hundred three thousand, two hundred ninety".