81048340370 has 16 divisors (see below), whose sum is σ = 145890279360. Its totient is φ = 32418610224.

The previous prime is 81048340343. The next prime is 81048340381. The reversal of 81048340370 is 7304384018.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742739 + ... + 844841.

It is an arithmetic number, because the mean of its divisors is an integer number (9118142460).

Almost surely, 2^81048340370 is an apocalyptic number.

81048340370 is a deficient number, since it is larger than the sum of its proper divisors (64841938990).

81048340370 is a wasteful number, since it uses less digits than its factorization.

81048340370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181489.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 81048340370 in words is "eighty-one billion, forty-eight million, three hundred forty thousand, three hundred seventy".