7681446800138 has 8 divisors (see below), whose sum is σ = 11833580205732. Its totient is φ = 3736920064896.

The previous prime is 7681446800123. The next prime is 7681446800179. The reversal of 7681446800138 is 8310086441867.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7650130896769 + 31315903369 = 2765887^2 + 176963^2 .

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

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, 51901667495 + ... + 51901667642.

Almost surely, 2^{7681446800138} is an apocalyptic number.

7681446800138 is a deficient number, since it is larger than the sum of its proper divisors (4152133405594).

7681446800138 is a wasteful number, since it uses less digits than its factorization.

7681446800138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103803335176.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 7681446800138 in words is "seven trillion, six hundred eighty-one billion, four hundred forty-six million, eight hundred thousand, one hundred thirty-eight".