71273275276505 has 4 divisors (see below), whose sum is σ = 85527930331812. Its totient is φ = 57018620221200.

The previous prime is 71273275276499. The next prime is 71273275276579. The reversal of 71273275276505 is 50567257237217.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11124005961289 + 60149269315216 = 3335267^2 + 7755596^2 .

It is not a de Polignac number, because 71273275276505 - 2³⁸ = 70998397369561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7127327527646 + ... + 7127327527655.

It is an arithmetic number, because the mean of its divisors is an integer number (21381982582953).

Almost surely, 2^{71273275276505} is an apocalyptic number.

It is an amenable number.

71273275276505 is a deficient number, since it is larger than the sum of its proper divisors (14254655055307).

71273275276505 is a wasteful number, since it uses less digits than its factorization.

71273275276505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14254655055306.

The product of its (nonzero) digits is 43218000, while the sum is 59.

The spelling of 71273275276505 in words is "seventy-one trillion, two hundred seventy-three billion, two hundred seventy-five million, two hundred seventy-six thousand, five hundred five".