609161336977 has 4 divisors (see below), whose sum is σ = 617506012900. Its totient is φ = 600816661056.

The previous prime is 609161336969. The next prime is 609161336999. The reversal of 609161336977 is 779633161906.

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 331786368081 + 277374968896 = 576009^2 + 526664^2 .

It is a cyclic number.

It is not a de Polignac number, because 609161336977 - 2³ = 609161336969 is a prime.

It is a super-2 number, since 2×609161336977² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609161336177) 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, 4172337852 + ... + 4172337997.

It is an arithmetic number, because the mean of its divisors is an integer number (154376503225).

Almost surely, 2^609161336977 is an apocalyptic number.

It is an amenable number.

609161336977 is a deficient number, since it is larger than the sum of its proper divisors (8344675923).

609161336977 is an equidigital number, since it uses as much as digits as its factorization.

609161336977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8344675922.

The product of its (nonzero) digits is 7715736, while the sum is 58.

The spelling of 609161336977 in words is "six hundred nine billion, one hundred sixty-one million, three hundred thirty-six thousand, nine hundred seventy-seven".