12315563542515 has 16 divisors (see below), whose sum is σ = 19706841561600. Its totient is φ = 6567653924832.

The previous prime is 12315563542501. The next prime is 12315563542537. The reversal of 12315563542515 is 51524536551321.

It is not a de Polignac number, because 12315563542515 - 2⁹ = 12315563542003 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40256985 + ... + 40561754.

It is an arithmetic number, because the mean of its divisors is an integer number (1231677597600).

Almost surely, 2^{12315563542515} is an apocalyptic number.

12315563542515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12315563542515 is a deficient number, since it is larger than the sum of its proper divisors (7391278019085).

12315563542515 is a wasteful number, since it uses less digits than its factorization.

12315563542515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80828906.

The product of its digits is 2700000, while the sum is 48.

The spelling of 12315563542515 in words is "twelve trillion, three hundred fifteen billion, five hundred sixty-three million, five hundred forty-two thousand, five hundred fifteen".