20943362494 has 16 divisors (see below), whose sum is σ = 32825689632. Its totient is φ = 10002709728.

The previous prime is 20943362443. The next prime is 20943362497. The reversal of 20943362494 is 49426334902.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20943362497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 276849 + ... + 344284.

It is an arithmetic number, because the mean of its divisors is an integer number (2051605602).

Almost surely, 2^20943362494 is an apocalyptic number.

20943362494 is a deficient number, since it is larger than the sum of its proper divisors (11882327138).

20943362494 is a wasteful number, since it uses less digits than its factorization.

20943362494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621891.

The product of its (nonzero) digits is 1119744, while the sum is 46.

The spelling of 20943362494 in words is "twenty billion, nine hundred forty-three million, three hundred sixty-two thousand, four hundred ninety-four".