71443000015 has 4 divisors (see below), whose sum is σ = 85731600024. Its totient is φ = 57154400008.

The previous prime is 71442999983. The next prime is 71443000019. The reversal of 71443000015 is 51000034417.

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 71443000015 - 2⁵ = 71442999983 is a prime.

It is a super-2 number, since 2×71443000015² (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 (71443000019) 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, 7144299997 + ... + 7144300006.

It is an arithmetic number, because the mean of its divisors is an integer number (21432900006).

Almost surely, 2^71443000015 is an apocalyptic number.

71443000015 is a deficient number, since it is larger than the sum of its proper divisors (14288600009).

71443000015 is a wasteful number, since it uses less digits than its factorization.

71443000015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14288600008.

The product of its (nonzero) digits is 1680, while the sum is 25.

The spelling of 71443000015 in words is "seventy-one billion, four hundred forty-three million, fifteen", and thus it is an aban number.