123315402532505 has 8 divisors (see below), whose sum is σ = 148051414782600. Its totient is φ = 98603700863616.

The previous prime is 123315402532463. The next prime is 123315402532513. The reversal of 123315402532505 is 505235204513321.

It can be written as a sum of positive squares in 4 ways, for example, as 68566812738064 + 54748589794441 = 8280508^2 + 7399229^2 .

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 123315402532505 - 2³⁸ = 123040524625561 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6077634140 + ... + 6077654429.

It is an arithmetic number, because the mean of its divisors is an integer number (18506426847825).

Almost surely, 2^{123315402532505} is an apocalyptic number.

It is an amenable number.

123315402532505 is a deficient number, since it is larger than the sum of its proper divisors (24736012250095).

123315402532505 is a wasteful number, since it uses less digits than its factorization.

123315402532505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12155290603.

The product of its (nonzero) digits is 540000, while the sum is 41.

The spelling of 123315402532505 in words is "one hundred twenty-three trillion, three hundred fifteen billion, four hundred two million, five hundred thirty-two thousand, five hundred five".