81964116110 has 16 divisors (see below), whose sum is σ = 148359632400. Its totient is φ = 32602485696.

The previous prime is 81964116109. The next prime is 81964116119. The reversal of 81964116110 is 1161146918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81964116119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22893215 + ... + 22896794.

It is an arithmetic number, because the mean of its divisors is an integer number (9272477025).

Almost surely, 2^81964116110 is an apocalyptic number.

81964116110 is a deficient number, since it is larger than the sum of its proper divisors (66395516290).

81964116110 is a wasteful number, since it uses less digits than its factorization.

81964116110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45790195.

The product of its (nonzero) digits is 10368, while the sum is 38.

The spelling of 81964116110 in words is "eighty-one billion, nine hundred sixty-four million, one hundred sixteen thousand, one hundred ten".