609308541440 has 640 divisors, whose sum is σ = 1642729144320. Its totient is φ = 216037785600.

The previous prime is 609308541403. The next prime is 609308541451. The reversal of 609308541440 is 44145803906.

It is a tau number, because it is divible by the number of its divisors (640).

It is a junction number, because it is equal to n+sod(n) for n = 609308541391 and 609308541400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4651210175 + ... + 4651210305.

It is an arithmetic number, because the mean of its divisors is an integer number (2566764288).

Almost surely, 2^609308541440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609308541440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (821364572160).

609308541440 is an abundant number, since it is smaller than the sum of its proper divisors (1033420602880).

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

609308541440 is a wasteful number, since it uses less digits than its factorization.

609308541440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 609308541440 in words is "six hundred nine billion, three hundred eight million, five hundred forty-one thousand, four hundred forty".