609951099511 has 16 divisors (see below), whose sum is σ = 668164885920. Its totient is φ = 553355412480.

The previous prime is 609951099509. The next prime is 609951099521. The reversal of 609951099511 is 115990159906.

It is not a de Polignac number, because 609951099511 - 2¹ = 609951099509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609951099521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3159091 + ... + 3346603.

It is an arithmetic number, because the mean of its divisors is an integer number (41760305370).

Almost surely, 2^609951099511 is an apocalyptic number.

609951099511 is a deficient number, since it is larger than the sum of its proper divisors (58213786409).

609951099511 is a wasteful number, since it uses less digits than its factorization.

609951099511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191826.

The product of its (nonzero) digits is 984150, while the sum is 55.

The spelling of 609951099511 in words is "six hundred nine billion, nine hundred fifty-one million, ninety-nine thousand, five hundred eleven".