22666166426640 has 160 divisors (see below), whose sum is σ = 76690875148416. Its totient is φ = 5492102676480.

The previous prime is 22666166426611. The next prime is 22666166426677. The reversal of 22666166426640 is 4662466166622.

It is a super-4 number, since 4×22666166426640⁴ (a number of 55 digits) contains 4444 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, 3196554 + ... + 7453206.

Almost surely, 2^{22666166426640} is an apocalyptic number.

22666166426640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22666166426640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38345437574208).

22666166426640 is an abundant number, since it is smaller than the sum of its proper divisors (54024708721776).

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

22666166426640 is a wasteful number, since it uses less digits than its factorization.

22666166426640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4258697 (or 4258691 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 57.

The spelling of 22666166426640 in words is "twenty-two trillion, six hundred sixty-six billion, one hundred sixty-six million, four hundred twenty-six thousand, six hundred forty".