609990600961 has 4 divisors (see below), whose sum is σ = 697132115392. Its totient is φ = 522849086532.

The previous prime is 609990600941. The next prime is 609990600977. The reversal of 609990600961 is 169006099906.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 609990600961 - 2²⁷ = 609856383233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609990600941) 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, 43570757205 + ... + 43570757218.

It is an arithmetic number, because the mean of its divisors is an integer number (174283028848).

Almost surely, 2^609990600961 is an apocalyptic number.

It is an amenable number.

609990600961 is a deficient number, since it is larger than the sum of its proper divisors (87141514431).

609990600961 is an equidigital number, since it uses as much as digits as its factorization.

609990600961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87141514430.

The product of its (nonzero) digits is 1417176, while the sum is 55.

The spelling of 609990600961 in words is "six hundred nine billion, nine hundred ninety million, six hundred thousand, nine hundred sixty-one".