71245803719 has 4 divisors (see below), whose sum is σ = 71262100296. Its totient is φ = 71229507144.

The previous prime is 71245803677. The next prime is 71245803757. The reversal of 71245803719 is 91730854217.

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 71245803719 - 2²⁴ = 71229026503 is a prime.

It is a super-2 number, since 2×71245803719² (a number of 23 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 (71245803779) 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, 8141729 + ... + 8150474.

It is an arithmetic number, because the mean of its divisors is an integer number (17815525074).

Almost surely, 2^71245803719 is an apocalyptic number.

71245803719 is a deficient number, since it is larger than the sum of its proper divisors (16296577).

71245803719 is a wasteful number, since it uses less digits than its factorization.

71245803719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16296576.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 71245803719 in words is "seventy-one billion, two hundred forty-five million, eight hundred three thousand, seven hundred nineteen".