6490399158240 has 192 divisors, whose sum is σ = 20498081486400. Its totient is φ = 1726263394304.

The previous prime is 6490399158233. The next prime is 6490399158293. The reversal of 6490399158240 is 428519930946.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 423398896 + ... + 423414224.

It is an arithmetic number, because the mean of its divisors is an integer number (106760841075).

Almost surely, 2^{6490399158240} is an apocalyptic number.

6490399158240 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 6490399158240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10249040743200).

6490399158240 is an abundant number, since it is smaller than the sum of its proper divisors (14007682328160).

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

6490399158240 is a wasteful number, since it uses less digits than its factorization.

6490399158240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17589 (or 17581 counting only the distinct ones).

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 6490399158240 in words is "six trillion, four hundred ninety billion, three hundred ninety-nine million, one hundred fifty-eight thousand, two hundred forty".