63642701879 has 4 divisors (see below), whose sum is σ = 63683009160. Its totient is φ = 63602394600.

The previous prime is 63642701869. The next prime is 63642701911. The reversal of 63642701879 is 97810724636.

63642701879 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 is a cyclic number.

It is not a de Polignac number, because 63642701879 - 2²⁰ = 63641653303 is a prime.

It is a super-3 number, since 3×63642701879³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63642701879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63642701849) 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, 20151272 + ... + 20154429.

It is an arithmetic number, because the mean of its divisors is an integer number (15920752290).

Almost surely, 2^63642701879 is an apocalyptic number.

63642701879 is a deficient number, since it is larger than the sum of its proper divisors (40307281).

63642701879 is a wasteful number, since it uses less digits than its factorization.

63642701879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40307280.

The product of its (nonzero) digits is 3048192, while the sum is 53.

The spelling of 63642701879 in words is "sixty-three billion, six hundred forty-two million, seven hundred one thousand, eight hundred seventy-nine".