81337143404 has 12 divisors (see below), whose sum is σ = 155280001128. Its totient is φ = 36971428800.

The previous prime is 81337143337. The next prime is 81337143431. The reversal of 81337143404 is 40434173318.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924285677 + ... + 924285764.

It is an arithmetic number, because the mean of its divisors is an integer number (12940000094).

Almost surely, 2^81337143404 is an apocalyptic number.

It is an amenable number.

81337143404 is a deficient number, since it is larger than the sum of its proper divisors (73942857724).

81337143404 is a wasteful number, since it uses less digits than its factorization.

81337143404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848571456 (or 1848571454 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 81337143404 in words is "eighty-one billion, three hundred thirty-seven million, one hundred forty-three thousand, four hundred four".