71556020315 has 16 divisors (see below), whose sum is σ = 94971652608. Its totient is φ = 51413222016.

The previous prime is 71556020287. The next prime is 71556020329. The reversal of 71556020315 is 51302065517.

It is not a de Polignac number, because 71556020315 - 2¹⁸ = 71555758171 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, 14874107 + ... + 14878916.

It is an arithmetic number, because the mean of its divisors is an integer number (5935728288).

Almost surely, 2^71556020315 is an apocalyptic number.

71556020315 is a deficient number, since it is larger than the sum of its proper divisors (23415632293).

71556020315 is a wasteful number, since it uses less digits than its factorization.

71556020315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29753078.

The product of its (nonzero) digits is 31500, while the sum is 35.

The spelling of 71556020315 in words is "seventy-one billion, five hundred fifty-six million, twenty thousand, three hundred fifteen".