63957309543 has 48 divisors (see below), whose sum is σ = 101517624000. Its totient is φ = 38620861440.

The previous prime is 63957309473. The next prime is 63957309551. The reversal of 63957309543 is 34590375936.

63957309543 is a `hidden beast` number, since 6 + 3 + 95 + 7 + 3 + 0 + 9 + 543 = 666.

63957309543 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 63957309543 - 2²⁸ = 63688874087 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 63957309543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63957305543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1356733 + ... + 1403081.

It is an arithmetic number, because the mean of its divisors is an integer number (2114950500).

Almost surely, 2^63957309543 is an apocalyptic number.

63957309543 is a deficient number, since it is larger than the sum of its proper divisors (37560314457).

63957309543 is a wasteful number, since it uses less digits than its factorization.

63957309543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46712 (or 46709 counting only the distinct ones).

The product of its (nonzero) digits is 9185400, while the sum is 54.

The spelling of 63957309543 in words is "sixty-three billion, nine hundred fifty-seven million, three hundred nine thousand, five hundred forty-three".