20266677267651 has 6 divisors (see below), whose sum is σ = 29274089386620. Its totient is φ = 13511118178428.

The previous prime is 20266677267643. The next prime is 20266677267703. The reversal of 20266677267651 is 15676277666202.

It is a happy number.

It is not a de Polignac number, because 20266677267651 - 2³ = 20266677267643 is a prime.

It is a super-2 number, since 2×20266677267651² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20266677260651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1125926514861 + ... + 1125926514878.

It is an arithmetic number, because the mean of its divisors is an integer number (4879014897770).

Almost surely, 2^{20266677267651} is an apocalyptic number.

20266677267651 is a deficient number, since it is larger than the sum of its proper divisors (9007412118969).

20266677267651 is a wasteful number, since it uses less digits than its factorization.

20266677267651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2251853029745 (or 2251853029742 counting only the distinct ones).

The product of its (nonzero) digits is 106686720, while the sum is 63.

The spelling of 20266677267651 in words is "twenty trillion, two hundred sixty-six billion, six hundred seventy-seven million, two hundred sixty-seven thousand, six hundred fifty-one".