20705381742862 has 16 divisors (see below), whose sum is σ = 31650443087760. Its totient is φ = 10155312677952.

The previous prime is 20705381742847. The next prime is 20705381742917. The reversal of 20705381742862 is 26824718350702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19128528 + ... + 20181955.

It is an arithmetic number, because the mean of its divisors is an integer number (1978152692985).

Almost surely, 2^{20705381742862} is an apocalyptic number.

20705381742862 is a deficient number, since it is larger than the sum of its proper divisors (10945061344898).

20705381742862 is a wasteful number, since it uses less digits than its factorization.

20705381742862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39315507.

The product of its (nonzero) digits is 9031680, while the sum is 55.

The spelling of 20705381742862 in words is "twenty trillion, seven hundred five billion, three hundred eighty-one million, seven hundred forty-two thousand, eight hundred sixty-two".