22161667436 has 6 divisors (see below), whose sum is σ = 38782918020. Its totient is φ = 11080833716.

The previous prime is 22161667421. The next prime is 22161667477. The reversal of 22161667436 is 63476616122.

It is a super-2 number, since 2×22161667436² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2770208426 + ... + 2770208433.

It is an arithmetic number, because the mean of its divisors is an integer number (6463819670).

Almost surely, 2^22161667436 is an apocalyptic number.

It is an amenable number.

22161667436 is a deficient number, since it is larger than the sum of its proper divisors (16621250584).

22161667436 is a wasteful number, since it uses less digits than its factorization.

22161667436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5540416863 (or 5540416861 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The spelling of 22161667436 in words is "twenty-two billion, one hundred sixty-one million, six hundred sixty-seven thousand, four hundred thirty-six".