20266758534 has 16 divisors (see below), whose sum is σ = 44218382400. Its totient is φ = 6141441960.

The previous prime is 20266758527. The next prime is 20266758649. The reversal of 20266758534 is 43585766202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153535984 + ... + 153536115.

It is an arithmetic number, because the mean of its divisors is an integer number (2763648900).

Almost surely, 2^20266758534 is an apocalyptic number.

20266758534 is an abundant number, since it is smaller than the sum of its proper divisors (23951623866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20266758534 is a wasteful number, since it uses less digits than its factorization.

20266758534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307072115.

The product of its (nonzero) digits is 2419200, while the sum is 48.

The spelling of 20266758534 in words is "twenty billion, two hundred sixty-six million, seven hundred fifty-eight thousand, five hundred thirty-four".