81767675195 has 12 divisors (see below), whose sum is σ = 98299551504. Its totient is φ = 65295461280.

The previous prime is 81767675183. The next prime is 81767675201. The reversal of 81767675195 is 59157676718.

It is not a de Polignac number, because 81767675195 - 2⁸ = 81767674939 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1524890 + ... + 1577600.

It is an arithmetic number, because the mean of its divisors is an integer number (8191629292).

Almost surely, 2^81767675195 is an apocalyptic number.

81767675195 is a deficient number, since it is larger than the sum of its proper divisors (16531876309).

81767675195 is an frugal number, since it uses more digits than its factorization.

81767675195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53830 (or 53273 counting only the distinct ones).

The product of its digits is 22226400, while the sum is 62.

The spelling of 81767675195 in words is "eighty-one billion, seven hundred sixty-seven million, six hundred seventy-five thousand, one hundred ninety-five".