131261401103666 has 8 divisors (see below), whose sum is σ = 196892211238704. Its totient is φ = 65630664024100.

The previous prime is 131261401103641. The next prime is 131261401103671. The reversal of 131261401103666 is 666301104162131.

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

It is a Curzon number.

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, 13526240 + ... + 21106443.

It is an arithmetic number, because the mean of its divisors is an integer number (24611526404838).

Almost surely, 2^{131261401103666} is an apocalyptic number.

131261401103666 is a deficient number, since it is larger than the sum of its proper divisors (65630810135038).

131261401103666 is a wasteful number, since it uses less digits than its factorization.

131261401103666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36527736.

The product of its (nonzero) digits is 93312, while the sum is 41.

Adding to 131261401103666 its reverse (666301104162131), we get a palindrome (797562505265797).

The spelling of 131261401103666 in words is "one hundred thirty-one trillion, two hundred sixty-one billion, four hundred one million, one hundred three thousand, six hundred sixty-six".