63642009599999 has 4 divisors (see below), whose sum is σ = 63915151272336. Its totient is φ = 63368867927664.

The previous prime is 63642009599983. The next prime is 63642009600023. The reversal of 63642009599999 is 99999590024636.

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

It is a cyclic number.

It is not a de Polignac number, because 63642009599999 - 2⁴ = 63642009599983 is a prime.

It is a super-3 number, since 3×63642009599999³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63642009599299) 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, 136570835819 + ... + 136570836284.

It is an arithmetic number, because the mean of its divisors is an integer number (15978787818084).

Almost surely, 2^{63642009599999} is an apocalyptic number.

63642009599999 is a deficient number, since it is larger than the sum of its proper divisors (273141672337).

63642009599999 is a wasteful number, since it uses less digits than its factorization.

63642009599999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273141672336.

The product of its (nonzero) digits is 2295825120, while the sum is 80.

The spelling of 63642009599999 in words is "sixty-three trillion, six hundred forty-two billion, nine million, five hundred ninety-nine thousand, nine hundred ninety-nine".