71318465139890 has 8 divisors (see below), whose sum is σ = 128373237251820. Its totient is φ = 28527386055952.

The previous prime is 71318465139853. The next prime is 71318465139913. The reversal of 71318465139890 is 9893156481317.

It can be written as a sum of positive squares in 2 ways, for example, as 70380002139841 + 938463000049 = 8389279^2 + 968743^2 .

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

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, 3565923256985 + ... + 3565923257004.

Almost surely, 2^{71318465139890} is an apocalyptic number.

71318465139890 is a deficient number, since it is larger than the sum of its proper divisors (57054772111930).

71318465139890 is a wasteful number, since it uses less digits than its factorization.

71318465139890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7131846513996.

The product of its (nonzero) digits is 39191040, while the sum is 65.

The spelling of 71318465139890 in words is "seventy-one trillion, three hundred eighteen billion, four hundred sixty-five million, one hundred thirty-nine thousand, eight hundred ninety".