22604453859978 has 64 divisors (see below), whose sum is σ = 50703232272000. Its totient is φ = 7464179071872.

The previous prime is 22604453859959. The next prime is 22604453859991. The reversal of 22604453859978 is 87995835440622.

22604453859978 is a `hidden beast` number, since 2 + 2 + 6 + 0 + 4 + 453 + 85 + 9 + 97 + 8 = 666.

It is a super-2 number, since 2×22604453859978² (a number of 28 digits) contains 22 as substring.

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, 28861101 + ... + 29633967.

It is an arithmetic number, because the mean of its divisors is an integer number (792238004250).

Almost surely, 2^{22604453859978} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22604453859978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25351616136000).

22604453859978 is an abundant number, since it is smaller than the sum of its proper divisors (28098778412022).

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

22604453859978 is a wasteful number, since it uses less digits than its factorization.

22604453859978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777956 (or 777950 counting only the distinct ones).

The product of its (nonzero) digits is 1045094400, while the sum is 72.

The spelling of 22604453859978 in words is "twenty-two trillion, six hundred four billion, four hundred fifty-three million, eight hundred fifty-nine thousand, nine hundred seventy-eight".