63857405201 has 4 divisors (see below), whose sum is σ = 67613723172. Its totient is φ = 60101087232.

The previous prime is 63857405111. The next prime is 63857405203. The reversal of 63857405201 is 10250475836.

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 19537050625 + 44320354576 = 139775^2 + 210524^2 .

It is a cyclic number.

It is not a de Polignac number, because 63857405201 - 2¹⁸ = 63857143057 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63857405203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1878158960 + ... + 1878158993.

It is an arithmetic number, because the mean of its divisors is an integer number (16903430793).

Almost surely, 2^63857405201 is an apocalyptic number.

It is an amenable number.

63857405201 is a deficient number, since it is larger than the sum of its proper divisors (3756317971).

63857405201 is a wasteful number, since it uses less digits than its factorization.

63857405201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3756317970.

The product of its (nonzero) digits is 201600, while the sum is 41.

The spelling of 63857405201 in words is "sixty-three billion, eight hundred fifty-seven million, four hundred five thousand, two hundred one".