71418049919 has 4 divisors (see below), whose sum is σ = 72937582944. Its totient is φ = 69898516896.

The previous prime is 71418049873. The next prime is 71418049921. The reversal of 71418049919 is 91994081417.

It is a happy number.

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 71418049919 - 2³² = 67123082623 is a prime.

It is a super-2 number, since 2×71418049919² (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 (71418049949) 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, 759766442 + ... + 759766535.

It is an arithmetic number, because the mean of its divisors is an integer number (18234395736).

Almost surely, 2^71418049919 is an apocalyptic number.

71418049919 is a deficient number, since it is larger than the sum of its proper divisors (1519533025).

71418049919 is a wasteful number, since it uses less digits than its factorization.

71418049919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519533024.

The product of its (nonzero) digits is 653184, while the sum is 53.

The spelling of 71418049919 in words is "seventy-one billion, four hundred eighteen million, forty-nine thousand, nine hundred nineteen".