68084403381 has 12 divisors (see below), whose sum is σ = 98432830860. Its totient is φ = 45348667200.

The previous prime is 68084403377. The next prime is 68084403391. The reversal of 68084403381 is 18330448086.

It can be written as a sum of positive squares in 2 ways, for example, as 697435281 + 67386968100 = 26409^2 + 259590^2 .

It is not a de Polignac number, because 68084403381 - 2² = 68084403377 is a prime.

It is a super-2 number, since 2×68084403381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68084403391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3400720 + ... + 3420681.

It is an arithmetic number, because the mean of its divisors is an integer number (8202735905).

Almost surely, 2^68084403381 is an apocalyptic number.

It is an amenable number.

68084403381 is a deficient number, since it is larger than the sum of its proper divisors (30348427479).

68084403381 is a wasteful number, since it uses less digits than its factorization.

68084403381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6822516 (or 6822513 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 68084403381 in words is "sixty-eight billion, eighty-four million, four hundred three thousand, three hundred eighty-one".