71311667380 has 12 divisors (see below), whose sum is σ = 149754501540. Its totient is φ = 28524666944.

The previous prime is 71311667353. The next prime is 71311667423. The reversal of 71311667380 is 8376611317.

It can be written as a sum of positive squares in 2 ways, for example, as 43333083556 + 27978583824 = 208166^2 + 167268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782791665 + ... + 1782791704.

It is an arithmetic number, because the mean of its divisors is an integer number (12479541795).

Almost surely, 2^71311667380 is an apocalyptic number.

It is an amenable number.

71311667380 is an abundant number, since it is smaller than the sum of its proper divisors (78442834160).

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

71311667380 is a wasteful number, since it uses less digits than its factorization.

71311667380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3565583378 (or 3565583376 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 43.

The spelling of 71311667380 in words is "seventy-one billion, three hundred eleven million, six hundred sixty-seven thousand, three hundred eighty".