20743662470 has 32 divisors (see below), whose sum is σ = 37889691840. Its totient is φ = 8175841920.

The previous prime is 20743662427. The next prime is 20743662473. The reversal of 20743662470 is 7426634702.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20743662473) 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 15 ways as a sum of consecutive naturals, for example, 144719 + ... + 249861.

It is an arithmetic number, because the mean of its divisors is an integer number (1184052870).

Almost surely, 2^20743662470 is an apocalyptic number.

20743662470 is a deficient number, since it is larger than the sum of its proper divisors (17146029370).

20743662470 is a wasteful number, since it uses less digits than its factorization.

20743662470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105440.

The product of its (nonzero) digits is 338688, while the sum is 41.

The spelling of 20743662470 in words is "twenty billion, seven hundred forty-three million, six hundred sixty-two thousand, four hundred seventy".