20924778088 has 24 divisors (see below), whose sum is σ = 40591128150. Its totient is φ = 10100553344.

The previous prime is 20924778079. The next prime is 20924778097. The reversal of 20924778088 is 88087742902.

It is an interprime number because it is at equal distance from previous prime (20924778079) and next prime (20924778097).

It can be written as a sum of positive squares in 3 ways, for example, as 7123697604 + 13801080484 = 84402^2 + 117478^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2198556 + ... + 2208052.

Almost surely, 2^20924778088 is an apocalyptic number.

It is an amenable number.

20924778088 is a deficient number, since it is larger than the sum of its proper divisors (19666350062).

20924778088 is an frugal number, since it uses more digits than its factorization.

20924778088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19029 (or 9528 counting only the distinct ones).

The product of its (nonzero) digits is 3612672, while the sum is 55.

The spelling of 20924778088 in words is "twenty billion, nine hundred twenty-four million, seven hundred seventy-eight thousand, eighty-eight".