113202407666 has 4 divisors (see below), whose sum is σ = 169803611502. Its totient is φ = 56601203832.

The previous prime is 113202407663. The next prime is 113202407723. The reversal of 113202407666 is 666704202311.

It is a happy number.

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., 84838795441 + 28363612225 = 291271^2 + 168415^2 .

It is not an unprimeable number, because it can be changed into a prime (113202407663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28300601915 + ... + 28300601918.

Almost surely, 2^113202407666 is an apocalyptic number.

113202407666 is a deficient number, since it is larger than the sum of its proper divisors (56601203836).

113202407666 is an equidigital number, since it uses as much as digits as its factorization.

113202407666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56601203835.

The product of its (nonzero) digits is 72576, while the sum is 38.

Adding to 113202407666 its reverse (666704202311), we get a palindrome (779906609977).

The spelling of 113202407666 in words is "one hundred thirteen billion, two hundred two million, four hundred seven thousand, six hundred sixty-six".