20116262399 has 4 divisors (see below), whose sum is σ = 20136727536. Its totient is φ = 20095797264.

The previous prime is 20116262389. The next prime is 20116262497. The reversal of 20116262399 is 99326261102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20116262399 - 2²⁰ = 20115213823 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 (20116262389) 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, 10231094 + ... + 10233059.

It is an arithmetic number, because the mean of its divisors is an integer number (5034181884).

Almost surely, 2^20116262399 is an apocalyptic number.

20116262399 is a deficient number, since it is larger than the sum of its proper divisors (20465137).

20116262399 is an equidigital number, since it uses as much as digits as its factorization.

20116262399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20465136.

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 20116262399 in words is "twenty billion, one hundred sixteen million, two hundred sixty-two thousand, three hundred ninety-nine".