81467580202 has 16 divisors (see below), whose sum is σ = 122714935200. Its totient is φ = 40562748720.

The previous prime is 81467580199. The next prime is 81467580221. The reversal of 81467580202 is 20208576418.

It is a happy number.

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, 1110949 + ... + 1182007.

It is an arithmetic number, because the mean of its divisors is an integer number (7669683450).

Almost surely, 2^81467580202 is an apocalyptic number.

81467580202 is a deficient number, since it is larger than the sum of its proper divisors (41247354998).

81467580202 is a wasteful number, since it uses less digits than its factorization.

81467580202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73461.

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 81467580202 in words is "eighty-one billion, four hundred sixty-seven million, five hundred eighty thousand, two hundred two".