65047619519 has 4 divisors (see below), whose sum is σ = 65048786160. Its totient is φ = 65046452880.

The previous prime is 65047619489. The next prime is 65047619557. The reversal of 65047619519 is 91591674056.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-65047619519 is a prime.

It is a super-2 number, since 2×65047619519² (a number of 22 digits) contains 22 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 (65047619569) 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 3 ways as a sum of consecutive naturals, for example, 495254 + ... + 612675.

It is an arithmetic number, because the mean of its divisors is an integer number (16262196540).

Almost surely, 2^65047619519 is an apocalyptic number.

65047619519 is a deficient number, since it is larger than the sum of its proper divisors (1166641).

65047619519 is a wasteful number, since it uses less digits than its factorization.

65047619519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166640.

The product of its (nonzero) digits is 2041200, while the sum is 53.

The spelling of 65047619519 in words is "sixty-five billion, forty-seven million, six hundred nineteen thousand, five hundred nineteen".