20914633736 has 16 divisors (see below), whose sum is σ = 39752130300. Its totient is φ = 10314065664.

The previous prime is 20914633679. The next prime is 20914633759. The reversal of 20914633736 is 63733641902.

It can be written as a sum of positive squares in 2 ways, for example, as 19878180100 + 1036453636 = 140990^2 + 32194^2 .

It is a super-2 number, since 2×20914633736² (a number of 21 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 17905781 + ... + 17906948.

Almost surely, 2^20914633736 is an apocalyptic number.

It is an amenable number.

20914633736 is a deficient number, since it is larger than the sum of its proper divisors (18837496564).

20914633736 is a wasteful number, since it uses less digits than its factorization.

20914633736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35812808 (or 35812804 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 44.

The spelling of 20914633736 in words is "twenty billion, nine hundred fourteen million, six hundred thirty-three thousand, seven hundred thirty-six".