1311640226615 has 8 divisors (see below), whose sum is σ = 1578996926448. Its totient is φ = 1045959744960.

The previous prime is 1311640226573. The next prime is 1311640226627. The reversal of 1311640226615 is 5166220461131.

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

It is not a de Polignac number, because 1311640226615 - 2⁴⁰ = 212128598839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419052821 + ... + 419055950.

It is an arithmetic number, because the mean of its divisors is an integer number (197374615806).

Almost surely, 2^{1311640226615} is an apocalyptic number.

1311640226615 is a deficient number, since it is larger than the sum of its proper divisors (267356699833).

1311640226615 is an equidigital number, since it uses as much as digits as its factorization.

1311640226615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838109089.

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 1311640226615 its reverse (5166220461131), we get a palindrome (6477860687746).

The spelling of 1311640226615 in words is "one trillion, three hundred eleven billion, six hundred forty million, two hundred twenty-six thousand, six hundred fifteen".