71132642775 has 36 divisors (see below), whose sum is σ = 132125236152. Its totient is φ = 37937406240.

The previous prime is 71132642773. The next prime is 71132642807. The reversal of 71132642775 is 57724623117.

71132642775 is a `hidden beast` number, since 7 + 113 + 264 + 277 + 5 = 666.

It is not a de Polignac number, because 71132642775 - 2¹ = 71132642773 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 71132642775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71132642773) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5848464 + ... + 5860613.

Almost surely, 2^71132642775 is an apocalyptic number.

71132642775 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

71132642775 is a deficient number, since it is larger than the sum of its proper divisors (60992593377).

71132642775 is a wasteful number, since it uses less digits than its factorization.

71132642775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11709102 (or 11709085 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The spelling of 71132642775 in words is "seventy-one billion, one hundred thirty-two million, six hundred forty-two thousand, seven hundred seventy-five".