2640138653163 has 16 divisors (see below), whose sum is σ = 3894289028352. Its totient is φ = 1577547636000.

The previous prime is 2640138653143. The next prime is 2640138653171. The reversal of 2640138653163 is 3613568310462.

It is not a de Polignac number, because 2640138653163 - 2⁶ = 2640138653099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2640138653143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 563407528 + ... + 563412213.

It is an arithmetic number, because the mean of its divisors is an integer number (243393064272).

Almost surely, 2^{2640138653163} is an apocalyptic number.

2640138653163 is a deficient number, since it is larger than the sum of its proper divisors (1254150375189).

2640138653163 is a wasteful number, since it uses less digits than its factorization.

2640138653163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126819826.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 2640138653163 in words is "two trillion, six hundred forty billion, one hundred thirty-eight million, six hundred fifty-three thousand, one hundred sixty-three".