610764552161 has 4 divisors (see below), whose sum is σ = 610766376900. Its totient is φ = 610762727424.

The previous prime is 610764552107. The next prime is 610764552169. The reversal of 610764552161 is 161255467016.

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 471220467025 + 139544085136 = 686455^2 + 373556^2 .

It is a cyclic number.

It is not a de Polignac number, because 610764552161 - 2²⁶ = 610697443297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (610764552169) 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, 250016 + ... + 1133153.

It is an arithmetic number, because the mean of its divisors is an integer number (152691594225).

Almost surely, 2^610764552161 is an apocalyptic number.

It is an amenable number.

610764552161 is a deficient number, since it is larger than the sum of its proper divisors (1824739).

610764552161 is a wasteful number, since it uses less digits than its factorization.

610764552161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1824738.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 610764552161 in words is "six hundred ten billion, seven hundred sixty-four million, five hundred fifty-two thousand, one hundred sixty-one".