22156111419640 has 128 divisors (see below), whose sum is σ = 55200654360000. Its totient is φ = 8002692656640.

The previous prime is 22156111419553. The next prime is 22156111419667. The reversal of 22156111419640 is 4691411165122.

It is a congruent number.

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, 6536266 + ... + 9329254.

Almost surely, 2^{22156111419640} is an apocalyptic number.

22156111419640 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 22156111419640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27600327180000).

22156111419640 is an abundant number, since it is smaller than the sum of its proper divisors (33044542940360).

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

22156111419640 is a wasteful number, since it uses less digits than its factorization.

22156111419640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793182 (or 2793156 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 22156111419640 in words is "twenty-two trillion, one hundred fifty-six billion, one hundred eleven million, four hundred nineteen thousand, six hundred forty".