20486703544 has 32 divisors (see below), whose sum is σ = 38579587200. Its totient is φ = 10198913920.

The previous prime is 20486703509. The next prime is 20486703547. The reversal of 20486703544 is 44530768402.

It is a self number, because there is not a number n which added to its sum of digits gives 20486703544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20486703547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760754 + ... + 1772350.

It is an arithmetic number, because the mean of its divisors is an integer number (1205612100).

Almost surely, 2^20486703544 is an apocalyptic number.

It is an amenable number.

20486703544 is a deficient number, since it is larger than the sum of its proper divisors (18092883656).

20486703544 is a wasteful number, since it uses less digits than its factorization.

20486703544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12543 (or 12539 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The spelling of 20486703544 in words is "twenty billion, four hundred eighty-six million, seven hundred three thousand, five hundred forty-four".