81333408214 has 8 divisors (see below), whose sum is σ = 125297412768. Its totient is φ = 39567603960.

The previous prime is 81333408203. The next prime is 81333408259. The reversal of 81333408214 is 41280433318.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent 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, 549549982 + ... + 549550129.

It is an arithmetic number, because the mean of its divisors is an integer number (15662176596).

Almost surely, 2^81333408214 is an apocalyptic number.

81333408214 is a deficient number, since it is larger than the sum of its proper divisors (43964004554).

81333408214 is a wasteful number, since it uses less digits than its factorization.

81333408214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099100150.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 81333408214 in words is "eighty-one billion, three hundred thirty-three million, four hundred eight thousand, two hundred fourteen".