71117957799 has 48 divisors (see below), whose sum is σ = 122089443840. Its totient is φ = 40525284960.

The previous prime is 71117957761. The next prime is 71117957837. The reversal of 71117957799 is 99775971117.

It is an interprime number because it is at equal distance from previous prime (71117957761) and next prime (71117957837).

It is not a de Polignac number, because 71117957799 - 2⁷ = 71117957671 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71117957299) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 552429 + ... + 668889.

It is an arithmetic number, because the mean of its divisors is an integer number (2543530080).

Almost surely, 2^71117957799 is an apocalyptic number.

71117957799 is a deficient number, since it is larger than the sum of its proper divisors (50971486041).

71117957799 is a wasteful number, since it uses less digits than its factorization.

71117957799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116842 (or 116830 counting only the distinct ones).

The product of its digits is 8751645, while the sum is 63.

The spelling of 71117957799 in words is "seventy-one billion, one hundred seventeen million, nine hundred fifty-seven thousand, seven hundred ninety-nine".