2640351161005 has 32 divisors (see below), whose sum is σ = 3288337113600. Its totient is φ = 2033715340800.

The previous prime is 2640351160999. The next prime is 2640351161053. The reversal of 2640351161005 is 5001611530462.

It is not a de Polignac number, because 2640351161005 - 2²⁷ = 2640216943277 is a prime.

It is a super-2 number, since 2×2640351161005² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35251495 + ... + 35326315.

It is an arithmetic number, because the mean of its divisors is an integer number (102760534800).

Almost surely, 2^{2640351161005} is an apocalyptic number.

It is an amenable number.

2640351161005 is a deficient number, since it is larger than the sum of its proper divisors (647985952595).

2640351161005 is a wasteful number, since it uses less digits than its factorization.

2640351161005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77125.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 2640351161005 its reverse (5001611530462), we get a palindrome (7641962691467).

The spelling of 2640351161005 in words is "two trillion, six hundred forty billion, three hundred fifty-one million, one hundred sixty-one thousand, five".