81486770760 has 96 divisors (see below), whose sum is σ = 270466784640. Its totient is φ = 21267464832.

The previous prime is 81486770759. The next prime is 81486770801. The reversal of 81486770760 is 6707768418.

It is a junction number, because it is equal to n+sod(n) for n = 81486770697 and 81486770706.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2391082 + ... + 2424921.

It is an arithmetic number, because the mean of its divisors is an integer number (2817362340).

Almost surely, 2^81486770760 is an apocalyptic number.

It is an amenable number.

81486770760 is an abundant number, since it is smaller than the sum of its proper divisors (188980013880).

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

81486770760 is a wasteful number, since it uses less digits than its factorization.

81486770760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4816067 (or 4816060 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 81486770760 in words is "eighty-one billion, four hundred eighty-six million, seven hundred seventy thousand, seven hundred sixty".