20057874943 has 2 divisors, whose sum is σ = 20057874944. Its totient is φ = 20057874942.

The previous prime is 20057874917. The next prime is 20057875007. The reversal of 20057874943 is 34947875002.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20057874943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20057874043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10028937471 + 10028937472.

It is an arithmetic number, because the mean of its divisors is an integer number (10028937472).

Almost surely, 2^20057874943 is an apocalyptic number.

20057874943 is a deficient number, since it is larger than the sum of its proper divisors (1).

20057874943 is an equidigital number, since it uses as much as digits as its factorization.

20057874943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1693440, while the sum is 49.

The spelling of 20057874943 in words is "twenty billion, fifty-seven million, eight hundred seventy-four thousand, nine hundred forty-three".