2640137502740 has 24 divisors (see below), whose sum is σ = 5614469629440. Its totient is φ = 1042687215648.

The previous prime is 2640137502719. The next prime is 2640137502749. The reversal of 2640137502740 is 472057310462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640137502749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 835484972 + ... + 835488131.

It is an arithmetic number, because the mean of its divisors is an integer number (233936234560).

Almost surely, 2^{2640137502740} is an apocalyptic number.

2640137502740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2640137502740 is an abundant number, since it is smaller than the sum of its proper divisors (2974332126700).

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

2640137502740 is a wasteful number, since it uses less digits than its factorization.

2640137502740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670973191 (or 1670973189 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 2640137502740 in words is "two trillion, six hundred forty billion, one hundred thirty-seven million, five hundred two thousand, seven hundred forty".