63943862401 has 4 divisors (see below), whose sum is σ = 64108242900. Its totient is φ = 63779481904.

The previous prime is 63943862399. The next prime is 63943862447. The reversal of 63943862401 is 10426834936.

63943862401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14714903025 + 49228959376 = 121305^2 + 221876^2 .

It is a cyclic number.

It is not a de Polignac number, because 63943862401 - 2¹ = 63943862399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63943862701) 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, 82189666 + ... + 82190443.

It is an arithmetic number, because the mean of its divisors is an integer number (16027060725).

Almost surely, 2^63943862401 is an apocalyptic number.

It is an amenable number.

63943862401 is a deficient number, since it is larger than the sum of its proper divisors (164380499).

63943862401 is a wasteful number, since it uses less digits than its factorization.

63943862401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164380498.

The product of its (nonzero) digits is 746496, while the sum is 46.

The spelling of 63943862401 in words is "sixty-three billion, nine hundred forty-three million, eight hundred sixty-two thousand, four hundred one".