20883557744 has 40 divisors (see below), whose sum is σ = 47185893600. Its totient is φ = 8950093824.

The previous prime is 20883557731. The next prime is 20883557767. The reversal of 20883557744 is 44775538802.

It is a super-2 number, since 2×20883557744² (a number of 21 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 1897169 + ... + 1908144.

It is an arithmetic number, because the mean of its divisors is an integer number (1179647340).

Almost surely, 2^20883557744 is an apocalyptic number.

It is an amenable number.

20883557744 is an abundant number, since it is smaller than the sum of its proper divisors (26302335856).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20883557744 is an equidigital number, since it uses as much as digits as its factorization.

20883557744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3805342 (or 3805322 counting only the distinct ones).

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 20883557744 in words is "twenty billion, eight hundred eighty-three million, five hundred fifty-seven thousand, seven hundred forty-four".