20116297409 has 8 divisors (see below), whose sum is σ = 21740259072. Its totient is φ = 18503272080.

The previous prime is 20116297391. The next prime is 20116297429. The reversal of 20116297409 is 90479261102.

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 20116297409 - 2³² = 15821330113 is a prime.

It is a super-2 number, since 2×20116297409² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116297429) 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, 2730257 + ... + 2737614.

It is an arithmetic number, because the mean of its divisors is an integer number (2717532384).

Almost surely, 2^20116297409 is an apocalyptic number.

It is an amenable number.

20116297409 is a deficient number, since it is larger than the sum of its proper divisors (1623961663).

20116297409 is a wasteful number, since it uses less digits than its factorization.

20116297409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5468167.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 20116297409 in words is "twenty billion, one hundred sixteen million, two hundred ninety-seven thousand, four hundred nine".