186215826872464 has 15 divisors (see below), whose sum is σ = 360793270322643. Its totient is φ = 93107886144048.

The previous prime is 186215826872461. The next prime is 186215826872479. The reversal of 186215826872464 is 464278628512681.

The square root of 186215826872464 is 13646092.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 186215826872393 and 186215826872402.

It is not an unprimeable number, because it can be changed into a prime (186215826872461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 52878607 + ... + 56290129.

Almost surely, 2^{186215826872464} is an apocalyptic number.

186215826872464 is the 13646092-nd square number.

It is an amenable number.

186215826872464 is a deficient number, since it is larger than the sum of its proper divisors (174577443450179).

186215826872464 is an frugal number, since it uses more digits than its factorization.

186215826872464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6823054 (or 3411525 counting only the distinct ones).

The product of its digits is 495452160, while the sum is 70.

The spelling of 186215826872464 in words is "one hundred eighty-six trillion, two hundred fifteen billion, eight hundred twenty-six million, eight hundred seventy-two thousand, four hundred sixty-four".