131618721063724 has 48 divisors (see below), whose sum is σ = 244351787904000. Its totient is φ = 61923880831680.

The previous prime is 131618721063701. The next prime is 131618721063743. The reversal of 131618721063724 is 427360127816131.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2691502 + ... + 16446325.

It is an arithmetic number, because the mean of its divisors is an integer number (5090662248000).

Almost surely, 2^{131618721063724} is an apocalyptic number.

It is an amenable number.

131618721063724 is a deficient number, since it is larger than the sum of its proper divisors (112733066840276).

131618721063724 is a wasteful number, since it uses less digits than its factorization.

131618721063724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19139398 (or 19139396 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

Adding to 131618721063724 its reverse (427360127816131), we get a palindrome (558978848879855).

The spelling of 131618721063724 in words is "one hundred thirty-one trillion, six hundred eighteen billion, seven hundred twenty-one million, sixty-three thousand, seven hundred twenty-four".