81070303470 has 32 divisors (see below), whose sum is σ = 209535554592. Its totient is φ = 19955766912.

The previous prime is 81070303453. The next prime is 81070303481. The reversal of 81070303470 is 7430307018.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103935897 + ... + 103936676.

It is an arithmetic number, because the mean of its divisors is an integer number (6547986081).

Almost surely, 2^81070303470 is an apocalyptic number.

81070303470 is an abundant number, since it is smaller than the sum of its proper divisors (128465251122).

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

81070303470 is a wasteful number, since it uses less digits than its factorization.

81070303470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207872596.

The product of its (nonzero) digits is 14112, while the sum is 33.

The spelling of 81070303470 in words is "eighty-one billion, seventy million, three hundred three thousand, four hundred seventy".