6001439640 has 192 divisors, whose sum is σ = 21039976800. Its totient is φ = 1365460992.

The previous prime is 6001439629. The next prime is 6001439641. The reversal of 6001439640 is 469341006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6001439641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1344292 + ... + 1348748.

Almost surely, 2^6001439640 is an apocalyptic number.

6001439640 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6001439640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10519988400).

6001439640 is an abundant number, since it is smaller than the sum of its proper divisors (15038537160).

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

6001439640 is a wasteful number, since it uses less digits than its factorization.

6001439640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714 (or 4703 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 6001439640 is about 77468.9592030253. The cubic root of 6001439640 is about 1817.2659145149.

The spelling of 6001439640 in words is "six billion, one million, four hundred thirty-nine thousand, six hundred forty".