71278227907 has 4 divisors (see below), whose sum is σ = 71597861440. Its totient is φ = 70958594376.

The previous prime is 71278227847. The next prime is 71278227931. The reversal of 71278227907 is 70972287217.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70972287217 = 13 ⋅5459406709.

It is a cyclic number.

It is not a de Polignac number, because 71278227907 - 2¹⁹ = 71277703619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71278227107) 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, 159816432 + ... + 159816877.

It is an arithmetic number, because the mean of its divisors is an integer number (17899465360).

Almost surely, 2^71278227907 is an apocalyptic number.

71278227907 is a deficient number, since it is larger than the sum of its proper divisors (319633533).

71278227907 is a wasteful number, since it uses less digits than its factorization.

71278227907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319633532.

The product of its (nonzero) digits is 1382976, while the sum is 52.

The spelling of 71278227907 in words is "seventy-one billion, two hundred seventy-eight million, two hundred twenty-seven thousand, nine hundred seven".