71661352104 has 64 divisors (see below), whose sum is σ = 202322616000. Its totient is φ = 23495520960.

The previous prime is 71661352031. The next prime is 71661352123. The reversal of 71661352104 is 40125316617.

71661352104 is a `hidden beast` number, since 7 + 16 + 613 + 5 + 21 + 0 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2706214 + ... + 2732565.

It is an arithmetic number, because the mean of its divisors is an integer number (3161290875).

Almost surely, 2^71661352104 is an apocalyptic number.

It is an amenable number.

71661352104 is an abundant number, since it is smaller than the sum of its proper divisors (130661263896).

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

71661352104 is a wasteful number, since it uses less digits than its factorization.

71661352104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438855 (or 5438845 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 71661352104 in words is "seventy-one billion, six hundred sixty-one million, three hundred fifty-two thousand, one hundred four".