20534381744 has 20 divisors (see below), whose sum is σ = 39826368360. Its totient is φ = 10256609280.

The previous prime is 20534381743. The next prime is 20534381779. The reversal of 20534381744 is 44718343502.

It is not an unprimeable number, because it can be changed into a prime (20534381743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645329 + ... + 676400.

It is an arithmetic number, because the mean of its divisors is an integer number (1991318418).

Almost surely, 2^20534381744 is an apocalyptic number.

It is an amenable number.

20534381744 is a deficient number, since it is larger than the sum of its proper divisors (19291986616).

20534381744 is a wasteful number, since it uses less digits than its factorization.

20534381744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322708 (or 1322702 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 20534381744 in words is "twenty billion, five hundred thirty-four million, three hundred eighty-one thousand, seven hundred forty-four".