71428723015 has 16 divisors (see below), whose sum is σ = 94049551008. Its totient is φ = 51752128896.

The previous prime is 71428722929. The next prime is 71428723021. The reversal of 71428723015 is 51032782417.

It is not a de Polignac number, because 71428723015 - 2⁷ = 71428722887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10363569 + ... + 10370458.

It is an arithmetic number, because the mean of its divisors is an integer number (5878096938).

Almost surely, 2^71428723015 is an apocalyptic number.

71428723015 is a deficient number, since it is larger than the sum of its proper divisors (22620827993).

71428723015 is a wasteful number, since it uses less digits than its factorization.

71428723015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20734098.

The product of its (nonzero) digits is 94080, while the sum is 40.

The spelling of 71428723015 in words is "seventy-one billion, four hundred twenty-eight million, seven hundred twenty-three thousand, fifteen".