81024210435 has 48 divisors (see below), whose sum is σ = 150850826496. Its totient is φ = 37028198592.

The previous prime is 81024210433. The next prime is 81024210523. The reversal of 81024210435 is 53401242018.

It is not a de Polignac number, because 81024210435 - 2¹ = 81024210433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81024210431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2647692 + ... + 2678118.

It is an arithmetic number, because the mean of its divisors is an integer number (3142725552).

Almost surely, 2^81024210435 is an apocalyptic number.

81024210435 is a deficient number, since it is larger than the sum of its proper divisors (69826616061).

81024210435 is a wasteful number, since it uses less digits than its factorization.

81024210435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34072 (or 34065 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 81024210435 in words is "eighty-one billion, twenty-four million, two hundred ten thousand, four hundred thirty-five".