2640252046887 has 192 divisors, whose sum is σ = 4853616768000. Its totient is φ = 1346226407424.

The previous prime is 2640252046871. The next prime is 2640252046897. The reversal of 2640252046887 is 7886402520462.

2640252046887 is a `hidden beast` number, since 2 + 64 + 0 + 25 + 20 + 468 + 87 = 666.

2640252046887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2640252046887 - 2⁴ = 2640252046871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640252046807) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 721575664 + ... + 721579322.

It is an arithmetic number, because the mean of its divisors is an integer number (25279254000).

Almost surely, 2^{2640252046887} is an apocalyptic number.

2640252046887 is a deficient number, since it is larger than the sum of its proper divisors (2213364721113).

2640252046887 is a wasteful number, since it uses less digits than its factorization.

2640252046887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990 (or 3987 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 54.

The spelling of 2640252046887 in words is "two trillion, six hundred forty billion, two hundred fifty-two million, forty-six thousand, eight hundred eighty-seven".