71231077752 has 32 divisors (see below), whose sum is σ = 178312981200. Its totient is φ = 23712321024.

The previous prime is 71231077703. The next prime is 71231077759. The reversal of 71231077752 is 25777013217.

It is a super-2 number, since 2×71231077752² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71231077759) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1942177 + ... + 1978512.

Almost surely, 2^71231077752 is an apocalyptic number.

It is an amenable number.

71231077752 is an abundant number, since it is smaller than the sum of its proper divisors (107081903448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71231077752 is a wasteful number, since it uses less digits than its factorization.

71231077752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3921455 (or 3921451 counting only the distinct ones).

The product of its (nonzero) digits is 144060, while the sum is 42.

The spelling of 71231077752 in words is "seventy-one billion, two hundred thirty-one million, seventy-seven thousand, seven hundred fifty-two".