71206651516 has 96 divisors (see below), whose sum is σ = 170054115840. Its totient is φ = 25188883200.

The previous prime is 71206651459. The next prime is 71206651553. The reversal of 71206651516 is 61515660217.

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, 98475 + ... + 390013.

It is an arithmetic number, because the mean of its divisors is an integer number (1771397040).

Almost surely, 2^71206651516 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71206651516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85027057920).

71206651516 is an abundant number, since it is smaller than the sum of its proper divisors (98847464324).

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

71206651516 is a wasteful number, since it uses less digits than its factorization.

71206651516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291635 (or 291633 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The spelling of 71206651516 in words is "seventy-one billion, two hundred six million, six hundred fifty-one thousand, five hundred sixteen".