20149230779 has 8 divisors (see below), whose sum is σ = 20240182128. Its totient is φ = 20058461280.

The previous prime is 20149230743. The next prime is 20149230781. The reversal of 20149230779 is 97703294102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20149230779 - 2²⁴ = 20132453563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20149230719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179129 + ... + 269045.

It is an arithmetic number, because the mean of its divisors is an integer number (2530022766).

Almost surely, 2^20149230779 is an apocalyptic number.

20149230779 is a deficient number, since it is larger than the sum of its proper divisors (90951349).

20149230779 is an equidigital number, since it uses as much as digits as its factorization.

20149230779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90925.

The product of its (nonzero) digits is 190512, while the sum is 44.

The spelling of 20149230779 in words is "twenty billion, one hundred forty-nine million, two hundred thirty thousand, seven hundred seventy-nine".