20496837621 has 16 divisors (see below), whose sum is σ = 29433959744. Its totient is φ = 12612322944.

The previous prime is 20496837601. The next prime is 20496837623. The reversal of 20496837621 is 12673869402.

It is not a de Polignac number, because 20496837621 - 2¹⁴ = 20496821237 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 (20496837623) 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, 743730 + ... + 770796.

It is an arithmetic number, because the mean of its divisors is an integer number (1839622484).

Almost surely, 2^20496837621 is an apocalyptic number.

It is an amenable number.

20496837621 is a deficient number, since it is larger than the sum of its proper divisors (8937122123).

20496837621 is a wasteful number, since it uses less digits than its factorization.

20496837621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46500.

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 20496837621 in words is "twenty billion, four hundred ninety-six million, eight hundred thirty-seven thousand, six hundred twenty-one".