2015641791290 has 32 divisors (see below), whose sum is σ = 3726479811600. Its totient is φ = 784409923584.

The previous prime is 2015641791287. The next prime is 2015641791301. The reversal of 2015641791290 is 921971465102.

It is a Cunningham number, because it is equal to 1419733²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1803624826081 + 212016965209 = 1342991^2 + 460453^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5189786 + ... + 5564634.

Almost surely, 2^{2015641791290} is an apocalyptic number.

2015641791290 is a deficient number, since it is larger than the sum of its proper divisors (1710838020310).

2015641791290 is a wasteful number, since it uses less digits than its factorization.

2015641791290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389426.

The product of its (nonzero) digits is 272160, while the sum is 47.

The spelling of 2015641791290 in words is "two trillion, fifteen billion, six hundred forty-one million, seven hundred ninety-one thousand, two hundred ninety".