22196145438 has 24 divisors (see below), whose sum is σ = 50920569648. Its totient is φ = 6963496512.

The previous prime is 22196145409. The next prime is 22196145463. The reversal of 22196145438 is 83454169122.

22196145438 is a `hidden beast` number, since 2 + 2 + 1 + 96 + 14 + 543 + 8 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 22196145393 and 22196145402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36267906 + ... + 36268517.

It is an arithmetic number, because the mean of its divisors is an integer number (2121690402).

Almost surely, 2^22196145438 is an apocalyptic number.

22196145438 is an abundant number, since it is smaller than the sum of its proper divisors (28724424210).

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

22196145438 is a wasteful number, since it uses less digits than its factorization.

22196145438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72536448 (or 72536445 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The spelling of 22196145438 in words is "twenty-two billion, one hundred ninety-six million, one hundred forty-five thousand, four hundred thirty-eight".