20247796479 has 16 divisors (see below), whose sum is σ = 27143916800. Its totient is φ = 13425160320.

The previous prime is 20247796463. The next prime is 20247796487. The reversal of 20247796479 is 97469774202.

It is not a de Polignac number, because 20247796479 - 2⁴ = 20247796463 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 (20247796409) 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, 1857804 + ... + 1868670.

It is an arithmetic number, because the mean of its divisors is an integer number (1696494800).

Almost surely, 2^20247796479 is an apocalyptic number.

20247796479 is a deficient number, since it is larger than the sum of its proper divisors (6896120321).

20247796479 is a wasteful number, since it uses less digits than its factorization.

20247796479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14190.

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 20247796479 in words is "twenty billion, two hundred forty-seven million, seven hundred ninety-six thousand, four hundred seventy-nine".