1279813620415 has 48 divisors (see below), whose sum is σ = 1689140597760. Its totient is φ = 923192432640.

The previous prime is 1279813620383. The next prime is 1279813620439. The reversal of 1279813620415 is 5140263189721.

It is a happy number.

It is not a de Polignac number, because 1279813620415 - 2⁵ = 1279813620383 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 899376394 + ... + 899377816.

It is an arithmetic number, because the mean of its divisors is an integer number (35190429120).

It is a 1-persistent number, because it is pandigital, but 2⋅1279813620415 = 2559627240830 is not.

Almost surely, 2^{1279813620415} is an apocalyptic number.

1279813620415 is a deficient number, since it is larger than the sum of its proper divisors (409326977345).

1279813620415 is a wasteful number, since it uses less digits than its factorization.

1279813620415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2071 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

The spelling of 1279813620415 in words is "one trillion, two hundred seventy-nine billion, eight hundred thirteen million, six hundred twenty thousand, four hundred fifteen".