20574277984 has 96 divisors (see below), whose sum is σ = 46696608000. Its totient is φ = 8843364864.

The previous prime is 20574277963. The next prime is 20574278089. The reversal of 20574277984 is 48977247502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444277 + ... + 488395.

It is an arithmetic number, because the mean of its divisors is an integer number (486423000).

Almost surely, 2^20574277984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20574277984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23348304000).

20574277984 is an abundant number, since it is smaller than the sum of its proper divisors (26122330016).

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

20574277984 is a wasteful number, since it uses less digits than its factorization.

20574277984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44220 (or 44212 counting only the distinct ones).

The product of its (nonzero) digits is 7902720, while the sum is 55.

The spelling of 20574277984 in words is "twenty billion, five hundred seventy-four million, two hundred seventy-seven thousand, nine hundred eighty-four".