22278166630488 has 192 divisors, whose sum is σ = 63347907168000. Its totient is φ = 7059454980864.

The previous prime is 22278166630457. The next prime is 22278166630507. The reversal of 22278166630488 is 88403666187222.

It is a super-2 number, since 2×22278166630488² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 841975003 + ... + 842001461.

It is an arithmetic number, because the mean of its divisors is an integer number (329937016500).

Almost surely, 2^{22278166630488} 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 22278166630488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31673953584000).

22278166630488 is an abundant number, since it is smaller than the sum of its proper divisors (41069740537512).

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

22278166630488 is a wasteful number, since it uses less digits than its factorization.

22278166630488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29606 (or 29599 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 63.

The spelling of 22278166630488 in words is "twenty-two trillion, two hundred seventy-eight billion, one hundred sixty-six million, six hundred thirty thousand, four hundred eighty-eight".