131481481466 has 4 divisors (see below), whose sum is σ = 197222222202. Its totient is φ = 65740740732.

The previous prime is 131481481451. The next prime is 131481481471. The reversal of 131481481466 is 664184184131.

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., 126324087241 + 5157394225 = 355421^2 + 71815^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 131481481466.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32870370365 + ... + 32870370368.

Almost surely, 2^131481481466 is an apocalyptic number.

131481481466 is a deficient number, since it is larger than the sum of its proper divisors (65740740736).

131481481466 is an equidigital number, since it uses as much as digits as its factorization.

131481481466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65740740735.

The product of its digits is 442368, while the sum is 47.

The spelling of 131481481466 in words is "one hundred thirty-one billion, four hundred eighty-one million, four hundred eighty-one thousand, four hundred sixty-six".