60644613121 has 4 divisors (see below), whose sum is σ = 60645111892. Its totient is φ = 60644114352.

The previous prime is 60644613119. The next prime is 60644613137. The reversal of 60644613121 is 12131644606.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 34558810000 + 26085803121 = 185900^2 + 161511^2 .

It is a cyclic number.

It is not a de Polignac number, because 60644613121 - 2¹ = 60644613119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60644613101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65671 + ... + 354403.

It is an arithmetic number, because the mean of its divisors is an integer number (15161277973).

Almost surely, 2^60644613121 is an apocalyptic number.

It is an amenable number.

60644613121 is a deficient number, since it is larger than the sum of its proper divisors (498771).

60644613121 is a wasteful number, since it uses less digits than its factorization.

60644613121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498770.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 60644613121 in words is "sixty billion, six hundred forty-four million, six hundred thirteen thousand, one hundred twenty-one".