720636126543 has 20 divisors (see below), whose sum is σ = 1084982257920. Its totient is φ = 476641210752.

The previous prime is 720636126533. The next prime is 720636126601. The reversal of 720636126543 is 345621636027.

720636126543 is a `hidden beast` number, since 7 + 2 + 0 + 636 + 1 + 2 + 6 + 5 + 4 + 3 = 666.

720636126543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 720636126543 - 2⁹ = 720636126031 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720636126533) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 35016258 + ... + 35036831.

It is an arithmetic number, because the mean of its divisors is an integer number (54249112896).

Almost surely, 2^720636126543 is an apocalyptic number.

720636126543 is a deficient number, since it is larger than the sum of its proper divisors (364346131377).

720636126543 is a wasteful number, since it uses less digits than its factorization.

720636126543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70053228 (or 70053219 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 720636126543 in words is "seven hundred twenty billion, six hundred thirty-six million, one hundred twenty-six thousand, five hundred forty-three".