60644131331 has 32 divisors (see below), whose sum is σ = 76149227520. Its totient is φ = 47096409600.

The previous prime is 60644131313. The next prime is 60644131351. The reversal of 60644131331 is 13313144606.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60644131331 is a prime.

It is a super-2 number, since 2×60644131331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60644131351) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 661565 + ... + 747633.

It is an arithmetic number, because the mean of its divisors is an integer number (2379663360).

Almost surely, 2^60644131331 is an apocalyptic number.

60644131331 is a deficient number, since it is larger than the sum of its proper divisors (15505096189).

60644131331 is a wasteful number, since it uses less digits than its factorization.

60644131331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86315.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 60644131331 its reverse (13313144606), we get a palindrome (73957275937).

The spelling of 60644131331 in words is "sixty billion, six hundred forty-four million, one hundred thirty-one thousand, three hundred thirty-one".