65719909130871 has 4 divisors (see below), whose sum is σ = 87626545507832. Its totient is φ = 43813272753912.

The previous prime is 65719909130831. The next prime is 65719909130873. The reversal of 65719909130871 is 17803190991756.

It is a happy number.

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

It is not a de Polignac number, because 65719909130871 - 2¹¹ = 65719909128823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65719909130873) 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, 10953318188476 + ... + 10953318188481.

It is an arithmetic number, because the mean of its divisors is an integer number (21906636376958).

Almost surely, 2^{65719909130871} is an apocalyptic number.

65719909130871 is a deficient number, since it is larger than the sum of its proper divisors (21906636376961).

65719909130871 is a wasteful number, since it uses less digits than its factorization.

65719909130871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21906636376960.

The product of its (nonzero) digits is 25719120, while the sum is 66.

The spelling of 65719909130871 in words is "sixty-five trillion, seven hundred nineteen billion, nine hundred nine million, one hundred thirty thousand, eight hundred seventy-one".