610001005601 has 4 divisors (see below), whose sum is σ = 656924159892. Its totient is φ = 563077851312.

The previous prime is 610001005591. The next prime is 610001005631. The reversal of 610001005601 is 106500100016.

It is a happy number.

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 136512514576 + 473488491025 = 369476^2 + 688105^2 .

It is a cyclic number.

It is not a de Polignac number, because 610001005601 - 2¹⁰ = 610001004577 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (610001005631) 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, 23461577126 + ... + 23461577151.

It is an arithmetic number, because the mean of its divisors is an integer number (164231039973).

Almost surely, 2^610001005601 is an apocalyptic number.

It is an amenable number.

610001005601 is a deficient number, since it is larger than the sum of its proper divisors (46923154291).

610001005601 is a wasteful number, since it uses less digits than its factorization.

610001005601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46923154290.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 610001005601 its reverse (106500100016), we get a palindrome (716501105617).

It can be divided in two parts, 61000 and 1005601, that added together give a palindrome (1066601).

The spelling of 610001005601 in words is "six hundred ten billion, one million, five thousand, six hundred one".