22640732771 has 8 divisors (see below), whose sum is σ = 23067254304. Its totient is φ = 22218179200.

The previous prime is 22640732759. The next prime is 22640732783. The reversal of 22640732771 is 17723704622.

It is an interprime number because it is at equal distance from previous prime (22640732759) and next prime (22640732783).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22640732771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22640732711) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 980471 + ... + 1003296.

It is an arithmetic number, because the mean of its divisors is an integer number (2883406788).

Almost surely, 2^22640732771 is an apocalyptic number.

22640732771 is a deficient number, since it is larger than the sum of its proper divisors (426521533).

22640732771 is a wasteful number, since it uses less digits than its factorization.

22640732771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1983981.

The product of its (nonzero) digits is 197568, while the sum is 41.

The spelling of 22640732771 in words is "twenty-two billion, six hundred forty million, seven hundred thirty-two thousand, seven hundred seventy-one".