20886774040 has 128 divisors (see below), whose sum is σ = 52124083200. Its totient is φ = 7469163520.

The previous prime is 20886774037. The next prime is 20886774067. The reversal of 20886774040 is 4047768802.

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 31 ways as a sum of consecutive naturals, for example, 8727084 + ... + 8729476.

It is an arithmetic number, because the mean of its divisors is an integer number (407219400).

Almost surely, 2^20886774040 is an apocalyptic number.

20886774040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20886774040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26062041600).

20886774040 is an abundant number, since it is smaller than the sum of its proper divisors (31237309160).

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

20886774040 is a wasteful number, since it uses less digits than its factorization.

20886774040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2737 (or 2733 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 46.

The spelling of 20886774040 in words is "twenty billion, eight hundred eighty-six million, seven hundred seventy-four thousand, forty".