610130138561 has 4 divisors (see below), whose sum is σ = 616171031124. Its totient is φ = 604089246000.

The previous prime is 610130138549. The next prime is 610130138581. The reversal of 610130138561 is 165831031016.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 431438785600 + 178691352961 = 656840^2 + 422719^2 .

It is a cyclic number.

It is not a de Polignac number, because 610130138561 - 2¹⁸ = 610129876417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610130138581) 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, 3020446130 + ... + 3020446331.

It is an arithmetic number, because the mean of its divisors is an integer number (154042757781).

Almost surely, 2^610130138561 is an apocalyptic number.

It is an amenable number.

610130138561 is a deficient number, since it is larger than the sum of its proper divisors (6040892563).

610130138561 is a wasteful number, since it uses less digits than its factorization.

610130138561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6040892562.

The product of its (nonzero) digits is 12960, while the sum is 35.

Adding to 610130138561 its reverse (165831031016), we get a palindrome (775961169577).

The spelling of 610130138561 in words is "six hundred ten billion, one hundred thirty million, one hundred thirty-eight thousand, five hundred sixty-one".