81007832332 has 36 divisors (see below), whose sum is σ = 165281233320. Its totient is φ = 34639235904.

The previous prime is 81007832291. The next prime is 81007832333. The reversal of 81007832332 is 23323870018.

It is a junction number, because it is equal to n+sod(n) for n = 81007832291 and 81007832300.

It is not an unprimeable number, because it can be changed into a prime (81007832333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379657 + ... + 553312.

It is an arithmetic number, because the mean of its divisors is an integer number (4591145370).

Almost surely, 2^81007832332 is an apocalyptic number.

It is an amenable number.

81007832332 is an abundant number, since it is smaller than the sum of its proper divisors (84273400988).

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

81007832332 is a wasteful number, since it uses less digits than its factorization.

81007832332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933430 (or 933421 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 81007832332 in words is "eighty-one billion, seven million, eight hundred thirty-two thousand, three hundred thirty-two".