22761771646 has 4 divisors (see below), whose sum is σ = 34142657472. Its totient is φ = 11380885822.

The previous prime is 22761771623. The next prime is 22761771649. The reversal of 22761771646 is 64617716722.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 22761771646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22761771649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5690442910 + ... + 5690442913.

It is an arithmetic number, because the mean of its divisors is an integer number (8535664368).

Almost surely, 2^22761771646 is an apocalyptic number.

22761771646 is a deficient number, since it is larger than the sum of its proper divisors (11380885826).

22761771646 is a wasteful number, since it uses less digits than its factorization.

22761771646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11380885825.

The product of its digits is 1185408, while the sum is 49.

The spelling of 22761771646 in words is "twenty-two billion, seven hundred sixty-one million, seven hundred seventy-one thousand, six hundred forty-six".