20893161743 has 4 divisors (see below), whose sum is σ = 20894926008. Its totient is φ = 20891397480.

The previous prime is 20893161727. The next prime is 20893161763. The reversal of 20893161743 is 34716139802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20893161743 - 2⁴ = 20893161727 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20893161694 and 20893161703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20893161703) 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, 864248 + ... + 888093.

It is an arithmetic number, because the mean of its divisors is an integer number (5223731502).

Almost surely, 2^20893161743 is an apocalyptic number.

20893161743 is a deficient number, since it is larger than the sum of its proper divisors (1764265).

20893161743 is a wasteful number, since it uses less digits than its factorization.

20893161743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1764264.

The product of its (nonzero) digits is 217728, while the sum is 44.

The spelling of 20893161743 in words is "twenty billion, eight hundred ninety-three million, one hundred sixty-one thousand, seven hundred forty-three".