20874163429 has 16 divisors (see below), whose sum is σ = 25083463680. Its totient is φ = 16983560880.

The previous prime is 20874163421. The next prime is 20874163433. The reversal of 20874163429 is 92436147802.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 20874163429 - 2³ = 20874163421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20874163421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473769 + ... + 515950.

It is an arithmetic number, because the mean of its divisors is an integer number (1567716480).

Almost surely, 2^20874163429 is an apocalyptic number.

It is an amenable number.

20874163429 is a deficient number, since it is larger than the sum of its proper divisors (4209300251).

20874163429 is a wasteful number, since it uses less digits than its factorization.

20874163429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989880.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 20874163429 in words is "twenty billion, eight hundred seventy-four million, one hundred sixty-three thousand, four hundred twenty-nine".