71479917916 has 24 divisors (see below), whose sum is σ = 136478951280. Its totient is φ = 32486755200.

The previous prime is 71479917907. The next prime is 71479917923. The reversal of 71479917916 is 61971997417.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262920 + ... + 460528.

It is an arithmetic number, because the mean of its divisors is an integer number (5686622970).

Almost surely, 2^71479917916 is an apocalyptic number.

It is an amenable number.

71479917916 is a deficient number, since it is larger than the sum of its proper divisors (64999033364).

71479917916 is a wasteful number, since it uses less digits than its factorization.

71479917916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205845 (or 205843 counting only the distinct ones).

The product of its digits is 6001128, while the sum is 61.

The spelling of 71479917916 in words is "seventy-one billion, four hundred seventy-nine million, nine hundred seventeen thousand, nine hundred sixteen".