81803526035 has 64 divisors (see below), whose sum is σ = 130314700800. Its totient is φ = 48776999040.

The previous prime is 81803526029. The next prime is 81803526037. The reversal of 81803526035 is 53062530818.

It is not a de Polignac number, because 81803526035 - 2²⁴ = 81786748819 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81803525983 and 81803526001.

It is not an unprimeable number, because it can be changed into a prime (81803526037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 339629 + ... + 528161.

It is an arithmetic number, because the mean of its divisors is an integer number (2036167200).

Almost surely, 2^81803526035 is an apocalyptic number.

81803526035 is a deficient number, since it is larger than the sum of its proper divisors (48511174765).

81803526035 is a wasteful number, since it uses less digits than its factorization.

81803526035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188593 (or 188579 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 41.

The spelling of 81803526035 in words is "eighty-one billion, eight hundred three million, five hundred twenty-six thousand, thirty-five".