71273508385 has 16 divisors (see below), whose sum is σ = 86393454336. Its totient is φ = 56442791808.

The previous prime is 71273508353. The next prime is 71273508391. The reversal of 71273508385 is 58380537217.

It is a cyclic number.

It is not a de Polignac number, because 71273508385 - 2⁵ = 71273508353 is a prime.

It is a Duffinian 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, 659749 + ... + 760141.

It is an arithmetic number, because the mean of its divisors is an integer number (5399590896).

Almost surely, 2^71273508385 is an apocalyptic number.

It is an amenable number.

71273508385 is a deficient number, since it is larger than the sum of its proper divisors (15119945951).

71273508385 is a wasteful number, since it uses less digits than its factorization.

71273508385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101832.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The spelling of 71273508385 in words is "seventy-one billion, two hundred seventy-three million, five hundred eight thousand, three hundred eighty-five".