20996706495 has 16 divisors (see below), whose sum is σ = 33623061120. Its totient is φ = 11188799904.

The previous prime is 20996706413. The next prime is 20996706517. The reversal of 20996706495 is 59460769902.

It is a happy number.

It is not a de Polignac number, because 20996706495 - 2¹⁴ = 20996690111 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 571825 + ... + 607434.

It is an arithmetic number, because the mean of its divisors is an integer number (2101441320).

Almost surely, 2^20996706495 is an apocalyptic number.

20996706495 is a deficient number, since it is larger than the sum of its proper divisors (12626354625).

20996706495 is a wasteful number, since it uses less digits than its factorization.

20996706495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180454.

The product of its (nonzero) digits is 7348320, while the sum is 57.

The spelling of 20996706495 in words is "twenty billion, nine hundred ninety-six million, seven hundred six thousand, four hundred ninety-five".