81922376670 has 32 divisors (see below), whose sum is σ = 196621852032. Its totient is φ = 21845061792.

The previous prime is 81922376663. The next prime is 81922376687. The reversal of 81922376670 is 7667322918.

It is a super-3 number, since 3×81922376670³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1007349 + ... + 1085631.

It is an arithmetic number, because the mean of its divisors is an integer number (6144432876).

Almost surely, 2^81922376670 is an apocalyptic number.

81922376670 is an abundant number, since it is smaller than the sum of its proper divisors (114699475362).

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

81922376670 is a wasteful number, since it uses less digits than its factorization.

81922376670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113176.

The product of its (nonzero) digits is 1524096, while the sum is 51.

The spelling of 81922376670 in words is "eighty-one billion, nine hundred twenty-two million, three hundred seventy-six thousand, six hundred seventy".