131520662444 has 12 divisors (see below), whose sum is σ = 230164275768. Its totient is φ = 65759440800.

The previous prime is 131520662443. The next prime is 131520662461. The reversal of 131520662444 is 444266025131.

It is a junction number, because it is equal to n+sod(n) for n = 131520662398 and 131520662407.

It is not an unprimeable number, because it can be changed into a prime (131520662443) 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, 198059 + ... + 549789.

It is an arithmetic number, because the mean of its divisors is an integer number (19180356314).

Almost surely, 2^131520662444 is an apocalyptic number.

It is an amenable number.

131520662444 is a deficient number, since it is larger than the sum of its proper divisors (98643613324).

131520662444 is a wasteful number, since it uses less digits than its factorization.

131520662444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445216 (or 445214 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 131520662444 its reverse (444266025131), we get a palindrome (575786687575).

The spelling of 131520662444 in words is "one hundred thirty-one billion, five hundred twenty million, six hundred sixty-two thousand, four hundred forty-four".