20788430365 has 24 divisors (see below), whose sum is σ = 26514190080. Its totient is φ = 15643999488.

The previous prime is 20788430359. The next prime is 20788430371. The reversal of 20788430365 is 56303488702.

It is an interprime number because it is at equal distance from previous prime (20788430359) and next prime (20788430371).

It is not a de Polignac number, because 20788430365 - 2³ = 20788430357 is a prime.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4365856 + ... + 4370614.

It is an arithmetic number, because the mean of its divisors is an integer number (1104757920).

Almost surely, 2^20788430365 is an apocalyptic number.

It is an amenable number.

20788430365 is a deficient number, since it is larger than the sum of its proper divisors (5725759715).

20788430365 is a wasteful number, since it uses less digits than its factorization.

20788430365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7821 (or 7804 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 46.

The spelling of 20788430365 in words is "twenty billion, seven hundred eighty-eight million, four hundred thirty thousand, three hundred sixty-five".