7938901388680 has 32 divisors (see below), whose sum is σ = 17871161722200. Its totient is φ = 3174025693696.

The previous prime is 7938901388669. The next prime is 7938901388681. The reversal of 7938901388680 is 868831098397.

It can be written as a sum of positive squares in 4 ways, for example, as 3646488138084 + 4292413250596 = 1909578^2 + 2071814^2 .

It is not an unprimeable number, because it can be changed into a prime (7938901388681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47880637 + ... + 48046156.

Almost surely, 2^{7938901388680} is an apocalyptic number.

It is an amenable number.

7938901388680 is an abundant number, since it is smaller than the sum of its proper divisors (9932260333520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7938901388680 is a wasteful number, since it uses less digits than its factorization.

7938901388680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95928873 (or 95928869 counting only the distinct ones).

The product of its (nonzero) digits is 125411328, while the sum is 70.

The spelling of 7938901388680 in words is "seven trillion, nine hundred thirty-eight billion, nine hundred one million, three hundred eighty-eight thousand, six hundred eighty".