2640490251430 has 16 divisors (see below), whose sum is σ = 4881338735760. Its totient is φ = 1027650259872.

The previous prime is 2640490251401. The next prime is 2640490251433. The reversal of 2640490251430 is 341520940462.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2640490251433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3568229700 + ... + 3568230439.

It is an arithmetic number, because the mean of its divisors is an integer number (305083670985).

Almost surely, 2^{2640490251430} is an apocalyptic number.

2640490251430 is a deficient number, since it is larger than the sum of its proper divisors (2240848484330).

2640490251430 is a wasteful number, since it uses less digits than its factorization.

2640490251430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136460183.

The product of its (nonzero) digits is 207360, while the sum is 40.

The spelling of 2640490251430 in words is "two trillion, six hundred forty billion, four hundred ninety million, two hundred fifty-one thousand, four hundred thirty".