22777889921986 has 8 divisors (see below), whose sum is σ = 34811492145084. Its totient is φ = 11174059206960.

The previous prime is 22777889921959. The next prime is 22777889921987. The reversal of 22777889921986 is 68912998877722.

It can be written as a sum of positive squares in 2 ways, for example, as 18862561041025 + 3915328880961 = 4343105^2 + 1978719^2 .

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

It is a super-2 number, since 2×22777889921986² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22777889921987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107442876885 + ... + 107442877096.

Almost surely, 2^{22777889921986} is an apocalyptic number.

22777889921986 is a deficient number, since it is larger than the sum of its proper divisors (12033602223098).

22777889921986 is a wasteful number, since it uses less digits than its factorization.

22777889921986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214885754036.

The product of its digits is 6145155072, while the sum is 85.

The spelling of 22777889921986 in words is "twenty-two trillion, seven hundred seventy-seven billion, eight hundred eighty-nine million, nine hundred twenty-one thousand, nine hundred eighty-six".