63999999999901 has 8 divisors (see below), whose sum is σ = 73150931269440. Its totient is φ = 54851087262048.

The previous prime is 63999999999839. The next prime is 63999999999907. The reversal of 63999999999901 is 10999999999936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63999999999901 - 2⁷ = 63999999999773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63999999999907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504564976 + ... + 504691801.

It is an arithmetic number, because the mean of its divisors is an integer number (9143866408680).

Almost surely, 2^{63999999999901} is an apocalyptic number.

It is an amenable number.

63999999999901 is a deficient number, since it is larger than the sum of its proper divisors (9150931269539).

63999999999901 is a wasteful number, since it uses less digits than its factorization.

63999999999901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009265843.

The product of its (nonzero) digits is 62762119218, while the sum is 100.

The spelling of 63999999999901 in words is "sixty-three trillion, nine hundred ninety-nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred one".