1315156505123 has 8 divisors (see below), whose sum is σ = 1335968056080. Its totient is φ = 1294379729280.

The previous prime is 1315156505107. The next prime is 1315156505153. The reversal of 1315156505123 is 3215056515131.

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

It is a cyclic number.

It is not a de Polignac number, because 1315156505123 - 2⁴ = 1315156505107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1315156505153) 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, 8617538 + ... + 8768823.

It is an arithmetic number, because the mean of its divisors is an integer number (166996007010).

Almost surely, 2^{1315156505123} is an apocalyptic number.

1315156505123 is a deficient number, since it is larger than the sum of its proper divisors (20811550957).

1315156505123 is a wasteful number, since it uses less digits than its factorization.

1315156505123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17387557.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 1315156505123 in words is "one trillion, three hundred fifteen billion, one hundred fifty-six million, five hundred five thousand, one hundred twenty-three".