63904087819 has 8 divisors (see below), whose sum is σ = 75076131312. Its totient is φ = 53625807840.

The previous prime is 63904087787. The next prime is 63904087837. The reversal of 63904087819 is 91878040936.

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

It is not a de Polignac number, because 63904087819 - 2⁵ = 63904087787 is a prime.

It is a super-2 number, since 2×63904087819² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63904087819.

It is not an unprimeable number, because it can be changed into a prime (63904087889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223440724 + ... + 223441009.

It is an arithmetic number, because the mean of its divisors is an integer number (9384516414).

Almost surely, 2^63904087819 is an apocalyptic number.

63904087819 is a deficient number, since it is larger than the sum of its proper divisors (11172043493).

63904087819 is a wasteful number, since it uses less digits than its factorization.

63904087819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446881757.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 63904087819 in words is "sixty-three billion, nine hundred four million, eighty-seven thousand, eight hundred nineteen".