71279403449 has 8 divisors (see below), whose sum is σ = 71649377280. Its totient is φ = 70910388016.

The previous prime is 71279403413. The next prime is 71279403457. The reversal of 71279403449 is 94430497217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71279403449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71279403397 and 71279403406.

It is not an unprimeable number, because it can be changed into a prime (71279403409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90227 + ... + 388200.

It is an arithmetic number, because the mean of its divisors is an integer number (8956172160).

Almost surely, 2^71279403449 is an apocalyptic number.

It is an amenable number.

71279403449 is a deficient number, since it is larger than the sum of its proper divisors (369973831).

71279403449 is a wasteful number, since it uses less digits than its factorization.

71279403449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479199.

The product of its (nonzero) digits is 1524096, while the sum is 50.

The spelling of 71279403449 in words is "seventy-one billion, two hundred seventy-nine million, four hundred three thousand, four hundred forty-nine".