81482200680 has 64 divisors (see below), whose sum is σ = 251053280640. Its totient is φ = 21141326592.

The previous prime is 81482200609. The next prime is 81482200687. The reversal of 81482200680 is 8600228418.

It is not an unprimeable number, because it can be changed into a prime (81482200687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9171484 + ... + 9180363.

It is an arithmetic number, because the mean of its divisors is an integer number (3922707510).

Almost surely, 2^81482200680 is an apocalyptic number.

It is an amenable number.

81482200680 is an abundant number, since it is smaller than the sum of its proper divisors (169571079960).

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

81482200680 is a wasteful number, since it uses less digits than its factorization.

81482200680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18351898 (or 18351894 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 81482200680 in words is "eighty-one billion, four hundred eighty-two million, two hundred thousand, six hundred eighty".