71132642774 has 4 divisors (see below), whose sum is σ = 106698964164. Its totient is φ = 35566321386.

The previous prime is 71132642773. The next prime is 71132642807. The reversal of 71132642774 is 47724623117.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17783160692 + ... + 17783160695.

It is an arithmetic number, because the mean of its divisors is an integer number (26674741041).

Almost surely, 2^71132642774 is an apocalyptic number.

71132642774 is a deficient number, since it is larger than the sum of its proper divisors (35566321390).

71132642774 is a wasteful number, since it uses less digits than its factorization.

71132642774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35566321389.

The product of its digits is 395136, while the sum is 44.

The spelling of 71132642774 in words is "seventy-one billion, one hundred thirty-two million, six hundred forty-two thousand, seven hundred seventy-four".