2489900630640 has 160 divisors (see below), whose sum is σ = 7756090245120. Its totient is φ = 660758611968.

The previous prime is 2489900630617. The next prime is 2489900630653. The reversal of 2489900630640 is 460360099842.

It is a super-2 number, since 2×2489900630640² (a number of 26 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 188865489 + ... + 188878671.

It is an arithmetic number, because the mean of its divisors is an integer number (48475564032).

Almost surely, 2^{2489900630640} is an apocalyptic number.

2489900630640 is a gapful number since it is divisible by the number (20) 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 2489900630640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3878045122560).

2489900630640 is an abundant number, since it is smaller than the sum of its proper divisors (5266189614480).

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

2489900630640 is a wasteful number, since it uses less digits than its factorization.

2489900630640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16951 (or 16945 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 2489900630640 in words is "two trillion, four hundred eighty-nine billion, nine hundred million, six hundred thirty thousand, six hundred forty".