20496400017 has 16 divisors (see below), whose sum is σ = 27422767680. Its totient is φ = 13617216000.

The previous prime is 20496399961. The next prime is 20496400031. The reversal of 20496400017 is 71000469402.

It is a happy number.

It is not a de Polignac number, because 20496400017 - 2⁸ = 20496399761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20495400017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1350642 + ... + 1365732.

It is an arithmetic number, because the mean of its divisors is an integer number (1713922980).

Almost surely, 2^20496400017 is an apocalyptic number.

It is an amenable number.

20496400017 is a deficient number, since it is larger than the sum of its proper divisors (6926367663).

20496400017 is a wasteful number, since it uses less digits than its factorization.

20496400017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16624.

The product of its (nonzero) digits is 12096, while the sum is 33.

Adding to 20496400017 its reverse (71000469402), we get a palindrome (91496869419).

The spelling of 20496400017 in words is "twenty billion, four hundred ninety-six million, four hundred thousand, seventeen".