20266878335 has 32 divisors (see below), whose sum is σ = 26730741312. Its totient is φ = 14629063680.

The previous prime is 20266878311. The next prime is 20266878337. The reversal of 20266878335 is 53387866202.

It is not a de Polignac number, because 20266878335 - 2²⁸ = 19998442879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266878337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4949549 + ... + 4953641.

It is an arithmetic number, because the mean of its divisors is an integer number (835335666).

Almost surely, 2^20266878335 is an apocalyptic number.

20266878335 is a deficient number, since it is larger than the sum of its proper divisors (6463862977).

20266878335 is a wasteful number, since it uses less digits than its factorization.

20266878335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4763.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 20266878335 in words is "twenty billion, two hundred sixty-six million, eight hundred seventy-eight thousand, three hundred thirty-five".