71715021846 has 64 divisors (see below), whose sum is σ = 162659508480. Its totient is φ = 20896202880.

The previous prime is 71715021839. The next prime is 71715021877. The reversal of 71715021846 is 64812051717.

It is a junction number, because it is equal to n+sod(n) for n = 71715021798 and 71715021807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4204816 + ... + 4221836.

It is an arithmetic number, because the mean of its divisors is an integer number (2541554820).

Almost surely, 2^71715021846 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71715021846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81329754240).

71715021846 is an abundant number, since it is smaller than the sum of its proper divisors (90944486634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71715021846 is a wasteful number, since it uses less digits than its factorization.

71715021846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19901.

The product of its (nonzero) digits is 94080, while the sum is 42.

The spelling of 71715021846 in words is "seventy-one billion, seven hundred fifteen million, twenty-one thousand, eight hundred forty-six".