21796193626 has 4 divisors (see below), whose sum is σ = 32694290442. Its totient is φ = 10898096812.

The previous prime is 21796193609. The next prime is 21796193719. The reversal of 21796193626 is 62639169712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11585293225 + 10210900401 = 107635^2 + 101049^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5449048405 + ... + 5449048408.

Almost surely, 2^21796193626 is an apocalyptic number.

21796193626 is a deficient number, since it is larger than the sum of its proper divisors (10898096816).

21796193626 is a wasteful number, since it uses less digits than its factorization.

21796193626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10898096815.

The product of its digits is 1469664, while the sum is 52.

The spelling of 21796193626 in words is "twenty-one billion, seven hundred ninety-six million, one hundred ninety-three thousand, six hundred twenty-six".