20266744234 has 24 divisors (see below), whose sum is σ = 33745886244. Its totient is φ = 9120936000.

The previous prime is 20266744229. The next prime is 20266744237. The reversal of 20266744234 is 43244766202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18237692209 + 2029052025 = 135047^2 + 45045^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20266744237) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390147 + ... + 439030.

Almost surely, 2^20266744234 is an apocalyptic number.

20266744234 is a deficient number, since it is larger than the sum of its proper divisors (13479142010).

20266744234 is a wasteful number, since it uses less digits than its factorization.

20266744234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829302 (or 829291 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 40.

The spelling of 20266744234 in words is "twenty billion, two hundred sixty-six million, seven hundred forty-four thousand, two hundred thirty-four".