71303581668 has 48 divisors (see below), whose sum is σ = 185926870080. Its totient is φ = 21080140800.

The previous prime is 71303581667. The next prime is 71303581711. The reversal of 71303581668 is 86618530317.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (71303581663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6582133 + ... + 6592956.

It is an arithmetic number, because the mean of its divisors is an integer number (3873476460).

Almost surely, 2^71303581668 is an apocalyptic number.

It is an amenable number.

71303581668 is an abundant number, since it is smaller than the sum of its proper divisors (114623288412).

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

71303581668 is a wasteful number, since it uses less digits than its factorization.

71303581668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175148 (or 13175146 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 71303581668 in words is "seventy-one billion, three hundred three million, five hundred eighty-one thousand, six hundred sixty-eight".