20650414399 has 4 divisors (see below), whose sum is σ = 20730766464. Its totient is φ = 20570062336.

The previous prime is 20650414391. The next prime is 20650414409. The reversal of 20650414399 is 99341405602.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99341405602 = 2 ⋅49670702801.

It is a cyclic number.

It is not a de Polignac number, because 20650414399 - 2³ = 20650414391 is a prime.

It is a super-2 number, since 2×20650414399² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20650414391) 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, 40175647 + ... + 40176160.

It is an arithmetic number, because the mean of its divisors is an integer number (5182691616).

Almost surely, 2^20650414399 is an apocalyptic number.

20650414399 is a deficient number, since it is larger than the sum of its proper divisors (80352065).

20650414399 is an equidigital number, since it uses as much as digits as its factorization.

20650414399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80352064.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 20650414399 in words is "twenty billion, six hundred fifty million, four hundred fourteen thousand, three hundred ninety-nine".