71746771993 has 8 divisors (see below), whose sum is σ = 77469627200. Its totient is φ = 66053041488.

The previous prime is 71746771991. The next prime is 71746772011. The reversal of 71746771993 is 39917764717.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71746771993 - 2¹ = 71746771991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71746771991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7276053 + ... + 7285906.

It is an arithmetic number, because the mean of its divisors is an integer number (9683703400).

Almost surely, 2^71746771993 is an apocalyptic number.

It is an amenable number.

71746771993 is a deficient number, since it is larger than the sum of its proper divisors (5722855207).

71746771993 is a wasteful number, since it uses less digits than its factorization.

71746771993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14562351.

The product of its digits is 14002632, while the sum is 61.

The spelling of 71746771993 in words is "seventy-one billion, seven hundred forty-six million, seven hundred seventy-one thousand, nine hundred ninety-three".