71507765321232 has 80 divisors (see below), whose sum is σ = 185614471913472. Its totient is φ = 23721602002560.

The previous prime is 71507765321191. The next prime is 71507765321243. The reversal of 71507765321232 is 23212356770517.

It is a super-2 number, since 2×71507765321232² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185828773 + ... + 186213179.

Almost surely, 2^{71507765321232} is an apocalyptic number.

It is an amenable number.

71507765321232 is an abundant number, since it is smaller than the sum of its proper divisors (114106706592240).

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

71507765321232 is a wasteful number, since it uses less digits than its factorization.

71507765321232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402996 (or 402990 counting only the distinct ones).

The product of its (nonzero) digits is 3704400, while the sum is 51.

The spelling of 71507765321232 in words is "seventy-one trillion, five hundred seven billion, seven hundred sixty-five million, three hundred twenty-one thousand, two hundred thirty-two".