75240231337666 has 4 divisors (see below), whose sum is σ = 112860347006502. Its totient is φ = 37620115668832.

The previous prime is 75240231337627. The next prime is 75240231337693. The reversal of 75240231337666 is 66673313204257.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 65034628004025 + 10205603333641 = 8064405^2 + 3194621^2 .

It is a super-2 number, since 2×75240231337666² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18810057834415 + ... + 18810057834418.

Almost surely, 2^{75240231337666} is an apocalyptic number.

75240231337666 is a deficient number, since it is larger than the sum of its proper divisors (37620115668836).

75240231337666 is a wasteful number, since it uses less digits than its factorization.

75240231337666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37620115668835.

The product of its (nonzero) digits is 22861440, while the sum is 55.

The spelling of 75240231337666 in words is "seventy-five trillion, two hundred forty billion, two hundred thirty-one million, three hundred thirty-seven thousand, six hundred sixty-six".