71147993495330 has 48 divisors (see below), whose sum is σ = 130643999032680. Its totient is φ = 27897487148544.

The previous prime is 71147993495311. The next prime is 71147993495333. The reversal of 71147993495330 is 3359439974117.

It is a Cunningham number, because it is equal to 8434927²+1.

It can be written as a sum of positive squares in 12 ways, for example, as 6041798412049 + 65106195083281 = 2458007^2 + 8068841^2 .

It is not an unprimeable number, because it can be changed into a prime (71147993495333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30591884 + ... + 32835336.

Almost surely, 2^{71147993495330} is an apocalyptic number.

71147993495330 is a deficient number, since it is larger than the sum of its proper divisors (59496005537350).

71147993495330 is a wasteful number, since it uses less digits than its factorization.

71147993495330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244695 (or 2244642 counting only the distinct ones).

The product of its (nonzero) digits is 77157360, while the sum is 65.

The spelling of 71147993495330 in words is "seventy-one trillion, one hundred forty-seven billion, nine hundred ninety-three million, four hundred ninety-five thousand, three hundred thirty".