22539367449768 has 256 divisors, whose sum is σ = 67964548538880. Its totient is φ = 6157915619328.

The previous prime is 22539367449737. The next prime is 22539367449773. The reversal of 22539367449768 is 86794476393522.

It is a super-2 number, since 2×22539367449768² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22539367449768.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7639930 + ... + 10170902.

It is an arithmetic number, because the mean of its divisors is an integer number (265486517730).

Almost surely, 2^{22539367449768} 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 22539367449768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33982274269440).

22539367449768 is an abundant number, since it is smaller than the sum of its proper divisors (45425181089112).

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

22539367449768 is a wasteful number, since it uses less digits than its factorization.

22539367449768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531108 (or 2531104 counting only the distinct ones).

The product of its digits is 3292047360, while the sum is 75.

The spelling of 22539367449768 in words is "twenty-two trillion, five hundred thirty-nine billion, three hundred sixty-seven million, four hundred forty-nine thousand, seven hundred sixty-eight".