20079564529 has 4 divisors (see below), whose sum is σ = 20408737780. Its totient is φ = 19750391280.

The previous prime is 20079564511. The next prime is 20079564539. The reversal of 20079564529 is 92546597002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92546597002 = 2 ⋅46273298501.

It can be written as a sum of positive squares in 2 ways, for example, as 6710886400 + 13368678129 = 81920^2 + 115623^2 .

It is a cyclic number.

It is not a de Polignac number, because 20079564529 - 2⁹ = 20079564017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20079564509) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164586534 + ... + 164586655.

It is an arithmetic number, because the mean of its divisors is an integer number (5102184445).

Almost surely, 2^20079564529 is an apocalyptic number.

It is an amenable number.

20079564529 is a deficient number, since it is larger than the sum of its proper divisors (329173251).

20079564529 is an equidigital number, since it uses as much as digits as its factorization.

20079564529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329173250.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 20079564529 in words is "twenty billion, seventy-nine million, five hundred sixty-four thousand, five hundred twenty-nine".