2640341521306 has 16 divisors (see below), whose sum is σ = 4002438555648. Its totient is φ = 1306217610000.

The previous prime is 2640341521297. The next prime is 2640341521423. The reversal of 2640341521306 is 6031251430462.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5330745 + ... + 5804956.

It is an arithmetic number, because the mean of its divisors is an integer number (250152409728).

Almost surely, 2^{2640341521306} is an apocalyptic number.

2640341521306 is a deficient number, since it is larger than the sum of its proper divisors (1362097034342).

2640341521306 is a wasteful number, since it uses less digits than its factorization.

2640341521306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11136957.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 2640341521306 its reverse (6031251430462), we get a palindrome (8671592951768).

The spelling of 2640341521306 in words is "two trillion, six hundred forty billion, three hundred forty-one million, five hundred twenty-one thousand, three hundred six".