609836442240 has 64 divisors (see below), whose sum is σ = 1943853665760. Its totient is φ = 162623050752.

The previous prime is 609836442223. The next prime is 609836442253. The reversal of 609836442240 is 42244638906.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 609836442240.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158809654 + ... + 158813493.

Almost surely, 2^609836442240 is an apocalyptic number.

609836442240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

609836442240 is an abundant number, since it is smaller than the sum of its proper divisors (1334017223520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

609836442240 is a wasteful number, since it uses less digits than its factorization.

609836442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317623169 (or 317623157 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 48.

The spelling of 609836442240 in words is "six hundred nine billion, eight hundred thirty-six million, four hundred forty-two thousand, two hundred forty".