2640351161003 has 4 divisors (see below), whose sum is σ = 2666493251808. Its totient is φ = 2614209070200.

The previous prime is 2640351160999. The next prime is 2640351161053. The reversal of 2640351161003 is 3001611530462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2640351161003 - 2² = 2640351160999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640351161053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13071045251 + ... + 13071045452.

It is an arithmetic number, because the mean of its divisors is an integer number (666623312952).

Almost surely, 2^{2640351161003} is an apocalyptic number.

2640351161003 is a deficient number, since it is larger than the sum of its proper divisors (26142090805).

2640351161003 is a wasteful number, since it uses less digits than its factorization.

2640351161003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26142090804.

The product of its (nonzero) digits is 12960, while the sum is 32.

Adding to 2640351161003 its reverse (3001611530462), we get a palindrome (5641962691465).

The spelling of 2640351161003 in words is "two trillion, six hundred forty billion, three hundred fifty-one million, one hundred sixty-one thousand, three".