71261213506113 has 4 divisors (see below), whose sum is σ = 95014951341488. Its totient is φ = 47507475670740.

The previous prime is 71261213506103. The next prime is 71261213506163. The reversal of 71261213506113 is 31160531216217.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 71261213506113 - 2⁴ = 71261213506097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71261213506103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11876868917683 + ... + 11876868917688.

It is an arithmetic number, because the mean of its divisors is an integer number (23753737835372).

Almost surely, 2^{71261213506113} is an apocalyptic number.

It is an amenable number.

71261213506113 is a deficient number, since it is larger than the sum of its proper divisors (23753737835375).

71261213506113 is a wasteful number, since it uses less digits than its factorization.

71261213506113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23753737835374.

The product of its (nonzero) digits is 45360, while the sum is 39.

The spelling of 71261213506113 in words is "seventy-one trillion, two hundred sixty-one billion, two hundred thirteen million, five hundred six thousand, one hundred thirteen".