609901099511 has 16 divisors (see below), whose sum is σ = 700390838400. Its totient is φ = 525254220000.

The previous prime is 609901099433. The next prime is 609901099603. The reversal of 609901099511 is 115990109906.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609901099511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 609901099511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609901092511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10961261 + ... + 11016761.

It is an arithmetic number, because the mean of its divisors is an integer number (43774427400).

Almost surely, 2^609901099511 is an apocalyptic number.

609901099511 is a deficient number, since it is larger than the sum of its proper divisors (90489738889).

609901099511 is a wasteful number, since it uses less digits than its factorization.

609901099511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108110.

The product of its (nonzero) digits is 196830, while the sum is 50.

The spelling of 609901099511 in words is "six hundred nine billion, nine hundred one million, ninety-nine thousand, five hundred eleven".