22391798261 has 8 divisors (see below), whose sum is σ = 26214788544. Its totient is φ = 18724848480.

The previous prime is 22391798239. The next prime is 22391798267. The reversal of 22391798261 is 16289719322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22391798261 - 2²⁶ = 22324689397 is a prime.

It is a super-2 number, since 2×22391798261² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22391798267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39009815 + ... + 39010388.

It is an arithmetic number, because the mean of its divisors is an integer number (3276848568).

Almost surely, 2^22391798261 is an apocalyptic number.

It is an amenable number.

22391798261 is a deficient number, since it is larger than the sum of its proper divisors (3822990283).

22391798261 is an equidigital number, since it uses as much as digits as its factorization.

22391798261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78020251.

The product of its digits is 653184, while the sum is 50.

The spelling of 22391798261 in words is "twenty-two billion, three hundred ninety-one million, seven hundred ninety-eight thousand, two hundred sixty-one".