20602040459 has 32 divisors (see below), whose sum is σ = 27764674560. Its totient is φ = 14763369600.

The previous prime is 20602040449. The next prime is 20602040467. The reversal of 20602040459 is 95404020602.

It is not a de Polignac number, because 20602040459 - 2²⁴ = 20585263243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20602040429) 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, 231014 + ... + 307524.

It is an arithmetic number, because the mean of its divisors is an integer number (867646080).

Almost surely, 2^20602040459 is an apocalyptic number.

20602040459 is a deficient number, since it is larger than the sum of its proper divisors (7162634101).

20602040459 is a wasteful number, since it uses less digits than its factorization.

20602040459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76811.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 20602040459 in words is "twenty billion, six hundred two million, forty thousand, four hundred fifty-nine".