1271000640579 has 8 divisors (see below), whose sum is σ = 1694729844480. Its totient is φ = 847302598536.

The previous prime is 1271000640577. The next prime is 1271000640631. The reversal of 1271000640579 is 9750460001721.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1271000640579 - 2¹ = 1271000640577 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1271000640579.

It is not an unprimeable number, because it can be changed into a prime (1271000640577) 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, 7695127 + ... + 7858560.

It is an arithmetic number, because the mean of its divisors is an integer number (211841230560).

Almost surely, 2^{1271000640579} is an apocalyptic number.

1271000640579 is a deficient number, since it is larger than the sum of its proper divisors (423729203901).

1271000640579 is a wasteful number, since it uses less digits than its factorization.

1271000640579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15580929.

The product of its (nonzero) digits is 105840, while the sum is 42.

The spelling of 1271000640579 in words is "one trillion, two hundred seventy-one billion, six hundred forty thousand, five hundred seventy-nine".