71681665073180 has 12 divisors (see below), whose sum is σ = 150531496653720. Its totient is φ = 28672666029264.

The previous prime is 71681665073129. The next prime is 71681665073197. The reversal of 71681665073180 is 8137056618617.

It is a super-2 number, since 2×71681665073180² (a number of 29 digits) contains 22 as substring.

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, 1792041626810 + ... + 1792041626849.

It is an arithmetic number, because the mean of its divisors is an integer number (12544291387810).

Almost surely, 2^{71681665073180} is an apocalyptic number.

It is an amenable number.

71681665073180 is an abundant number, since it is smaller than the sum of its proper divisors (78849831580540).

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

71681665073180 is a wasteful number, since it uses less digits than its factorization.

71681665073180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584083253668 (or 3584083253666 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 59.

The spelling of 71681665073180 in words is "seventy-one trillion, six hundred eighty-one billion, six hundred sixty-five million, seventy-three thousand, one hundred eighty".