1315120087778 has 16 divisors (see below), whose sum is σ = 2327217114624. Its totient is φ = 545441510880.

The previous prime is 1315120087739. The next prime is 1315120087783. The reversal of 1315120087778 is 8777800215131.

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, 1515114875 + ... + 1515115742.

It is an arithmetic number, because the mean of its divisors is an integer number (145451069664).

Almost surely, 2^{1315120087778} is an apocalyptic number.

1315120087778 is a deficient number, since it is larger than the sum of its proper divisors (1012097026846).

1315120087778 is a wasteful number, since it uses less digits than its factorization.

1315120087778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3030230657.

The product of its (nonzero) digits is 658560, while the sum is 50.

The spelling of 1315120087778 in words is "one trillion, three hundred fifteen billion, one hundred twenty million, eighty-seven thousand, seven hundred seventy-eight".