20696400833 has 8 divisors (see below), whose sum is σ = 20889941160. Its totient is φ = 20502927360.

The previous prime is 20696400793. The next prime is 20696400839. The reversal of 20696400833 is 33800469602.

It can be written as a sum of positive squares in 4 ways, for example, as 9475659649 + 11220741184 = 97343^2 + 105928^2 .

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 20696400833 - 2¹⁸ = 20696138689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20696400839) 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, 782363 + ... + 808383.

It is an arithmetic number, because the mean of its divisors is an integer number (2611242645).

Almost surely, 2^20696400833 is an apocalyptic number.

It is an amenable number.

20696400833 is a deficient number, since it is larger than the sum of its proper divisors (193540327).

20696400833 is a wasteful number, since it uses less digits than its factorization.

20696400833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33427.

The product of its (nonzero) digits is 186624, while the sum is 41.

The spelling of 20696400833 in words is "twenty billion, six hundred ninety-six million, four hundred thousand, eight hundred thirty-three".