63857606073 has 16 divisors (see below), whose sum is σ = 90979004160. Its totient is φ = 39699922176.

The previous prime is 63857606051. The next prime is 63857606083. The reversal of 63857606073 is 37060675836.

It is a happy number.

It is not a de Polignac number, because 63857606073 - 2⁶ = 63857606009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63857606083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5738065 + ... + 5749182.

It is an arithmetic number, because the mean of its divisors is an integer number (5686187760).

Almost surely, 2^63857606073 is an apocalyptic number.

It is an amenable number.

63857606073 is a deficient number, since it is larger than the sum of its proper divisors (27121398087).

63857606073 is a wasteful number, since it uses less digits than its factorization.

63857606073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11487376.

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 63857606073 in words is "sixty-three billion, eight hundred fifty-seven million, six hundred six thousand, seventy-three".