23205364515 has 64 divisors (see below), whose sum is σ = 41995860480. Its totient is φ = 12155391360.

The previous prime is 23205364499. The next prime is 23205364519. The reversal of 23205364515 is 51546350232.

23205364515 is a `hidden beast` number, since 2 + 3 + 2 + 0 + 5 + 3 + 645 + 1 + 5 = 666.

It is not a de Polignac number, because 23205364515 - 2⁴ = 23205364499 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23205364515.

It is not an unprimeable number, because it can be changed into a prime (23205364519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1932480 + ... + 1944450.

It is an arithmetic number, because the mean of its divisors is an integer number (656185320).

Almost surely, 2^23205364515 is an apocalyptic number.

23205364515 is a deficient number, since it is larger than the sum of its proper divisors (18790495965).

23205364515 is a wasteful number, since it uses less digits than its factorization.

23205364515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12241 (or 12235 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 23205364515 in words is "twenty-three billion, two hundred five million, three hundred sixty-four thousand, five hundred fifteen".