81760758252 has 48 divisors (see below), whose sum is σ = 192606325632. Its totient is φ = 26992111360.

The previous prime is 81760758223. The next prime is 81760758337. The reversal of 81760758252 is 25285706718.

It is a junction number, because it is equal to n+sod(n) for n = 81760758195 and 81760758204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10002127 + ... + 10010297.

It is an arithmetic number, because the mean of its divisors is an integer number (4012631784).

Almost surely, 2^81760758252 is an apocalyptic number.

It is an amenable number.

81760758252 is an abundant number, since it is smaller than the sum of its proper divisors (110845567380).

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

81760758252 is a wasteful number, since it uses less digits than its factorization.

81760758252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16078 (or 16076 counting only the distinct ones).

The product of its (nonzero) digits is 1881600, while the sum is 51.

The spelling of 81760758252 in words is "eighty-one billion, seven hundred sixty million, seven hundred fifty-eight thousand, two hundred fifty-two".