113381506666 has 8 divisors (see below), whose sum is σ = 170076909060. Its totient is φ = 56689203648.

The previous prime is 113381506649. The next prime is 113381506669. The reversal of 113381506666 is 666605183311.

It can be written as a sum of positive squares in 2 ways, for example, as 112646825641 + 734681025 = 335629^2 + 27105^2 .

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

It is not an unprimeable number, because it can be changed into a prime (113381506669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 681121 + ... + 831076.

Almost surely, 2^113381506666 is an apocalyptic number.

113381506666 is a deficient number, since it is larger than the sum of its proper divisors (56695402394).

113381506666 is a wasteful number, since it uses less digits than its factorization.

113381506666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1549688.

The product of its (nonzero) digits is 466560, while the sum is 46.

Adding to 113381506666 its reverse (666605183311), we get a palindrome (779986689977).

The spelling of 113381506666 in words is "one hundred thirteen billion, three hundred eighty-one million, five hundred six thousand, six hundred sixty-six".