81034409352 has 64 divisors (see below), whose sum is σ = 218210448960. Its totient is φ = 24928992000.

The previous prime is 81034409341. The next prime is 81034409359. The reversal of 81034409352 is 25390443018.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 81034409352.

It is not an unprimeable number, because it can be changed into a prime (81034409359) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1882227 + ... + 1924797.

It is an arithmetic number, because the mean of its divisors is an integer number (3409538265).

Almost surely, 2^81034409352 is an apocalyptic number.

It is an amenable number.

81034409352 is an abundant number, since it is smaller than the sum of its proper divisors (137176039608).

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

81034409352 is a wasteful number, since it uses less digits than its factorization.

81034409352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48694 (or 48690 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 81034409352 in words is "eighty-one billion, thirty-four million, four hundred nine thousand, three hundred fifty-two".