22686197578009 has 27 divisors (see below), whose sum is σ = 26454177409941. Its totient is φ = 19398187058040.

The previous prime is 22686197577983. The next prime is 22686197578019. The reversal of 22686197578009 is 90087579168622.

The square root of 22686197578009 is 4763003.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 22686197578009 - 2³⁷ = 22548758624537 is a prime.

It is a super-2 number, since 2×22686197578009² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22686197578019) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 27039567612 + ... + 27039568450.

Almost surely, 2^{22686197578009} is an apocalyptic number.

22686197578009 is the 4763003-rd square number.

22686197578009 is the 2381502-nd centered octagonal number.

It is an amenable number.

22686197578009 is a deficient number, since it is larger than the sum of its proper divisors (3767979831932).

22686197578009 is an frugal number, since it uses more digits than its factorization.

22686197578009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 182891520, while the sum is 70.

The spelling of 22686197578009 in words is "twenty-two trillion, six hundred eighty-six billion, one hundred ninety-seven million, five hundred seventy-eight thousand, nine".