22006640577 has 8 divisors (see below), whose sum is σ = 30024564064. Its totient is φ = 14329905408.

The previous prime is 22006640519. The next prime is 22006640599. The reversal of 22006640577 is 77504660022.

It is a happy number.

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

It is not a de Polignac number, because 22006640577 - 2²⁰ = 22005592001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22006640177) 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, 85296928 + ... + 85297185.

It is an arithmetic number, because the mean of its divisors is an integer number (3753070508).

Almost surely, 2^22006640577 is an apocalyptic number.

It is an amenable number.

22006640577 is a deficient number, since it is larger than the sum of its proper divisors (8017923487).

22006640577 is a wasteful number, since it uses less digits than its factorization.

22006640577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170594159.

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 22006640577 in words is "twenty-two billion, six million, six hundred forty thousand, five hundred seventy-seven".