60131363656521 has 4 divisors (see below), whose sum is σ = 80175151542032. Its totient is φ = 40087575771012.

The previous prime is 60131363656517. The next prime is 60131363656543. The reversal of 60131363656521 is 12565636313106.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 60131363656521 - 2² = 60131363656517 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60131363656561) 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, 10021893942751 + ... + 10021893942756.

It is an arithmetic number, because the mean of its divisors is an integer number (20043787885508).

Almost surely, 2^{60131363656521} is an apocalyptic number.

It is an amenable number.

60131363656521 is a deficient number, since it is larger than the sum of its proper divisors (20043787885511).

60131363656521 is a wasteful number, since it uses less digits than its factorization.

60131363656521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20043787885510.

The product of its (nonzero) digits is 1749600, while the sum is 48.

Adding to 60131363656521 its reverse (12565636313106), we get a palindrome (72696999969627).

The spelling of 60131363656521 in words is "sixty trillion, one hundred thirty-one billion, three hundred sixty-three million, six hundred fifty-six thousand, five hundred twenty-one".