3640605640980 has 192 divisors, whose sum is σ = 12717559830528. Its totient is φ = 755981360640.

The previous prime is 3640605640937. The next prime is 3640605640999. The reversal of 3640605640980 is 890465060463.

It is a happy number.

It is a congruent number.

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, 6633759 + ... + 7161561.

It is an arithmetic number, because the mean of its divisors is an integer number (66237290784).

Almost surely, 2^{3640605640980} is an apocalyptic number.

3640605640980 is a gapful number since it is divisible by the number (30) 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 3640605640980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6358779915264).

3640605640980 is an abundant number, since it is smaller than the sum of its proper divisors (9076954189548).

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

3640605640980 is a wasteful number, since it uses less digits than its factorization.

3640605640980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529326 (or 529324 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 51.

The spelling of 3640605640980 in words is "three trillion, six hundred forty billion, six hundred five million, six hundred forty thousand, nine hundred eighty".