609721199998 has 8 divisors (see below), whose sum is σ = 915396212808. Its totient is φ = 304589129064.

The previous prime is 609721199953. The next prime is 609721200007. The reversal of 609721199998 is 899991127906.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×609721199998² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135732661 + ... + 135737152.

It is an arithmetic number, because the mean of its divisors is an integer number (114424526601).

Almost surely, 2^609721199998 is an apocalyptic number.

609721199998 is a deficient number, since it is larger than the sum of its proper divisors (305675012810).

609721199998 is a wasteful number, since it uses less digits than its factorization.

609721199998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271470938.

The product of its (nonzero) digits is 39680928, while the sum is 70.

The spelling of 609721199998 in words is "six hundred nine billion, seven hundred twenty-one million, one hundred ninety-nine thousand, nine hundred ninety-eight".