63519887339 has 4 divisors (see below), whose sum is σ = 64390022856. Its totient is φ = 62649751824.

The previous prime is 63519887329. The next prime is 63519887351. The reversal of 63519887339 is 93378891536.

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 63519887339 - 2¹² = 63519883243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63519887329) 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, 435067649 + ... + 435067794.

It is an arithmetic number, because the mean of its divisors is an integer number (16097505714).

Almost surely, 2^63519887339 is an apocalyptic number.

63519887339 is a deficient number, since it is larger than the sum of its proper divisors (870135517).

63519887339 is an equidigital number, since it uses as much as digits as its factorization.

63519887339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870135516.

The product of its digits is 29393280, while the sum is 62.

The spelling of 63519887339 in words is "sixty-three billion, five hundred nineteen million, eight hundred eighty-seven thousand, three hundred thirty-nine".