182821620465 has 72 divisors (see below), whose sum is σ = 347671291968. Its totient is φ = 88137938880.

The previous prime is 182821620463. The next prime is 182821620481. The reversal of 182821620465 is 564026128281.

182821620465 is a `hidden beast` number, since 1 + 8 + 28 + 2 + 162 + 0 + 465 = 666.

It is not a de Polignac number, because 182821620465 - 2¹ = 182821620463 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 182821620465.

It is not an unprimeable number, because it can be changed into a prime (182821620463) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 15854532 + ... + 15866058.

It is an arithmetic number, because the mean of its divisors is an integer number (4828767944).

Almost surely, 2^182821620465 is an apocalyptic number.

182821620465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

182821620465 is a deficient number, since it is larger than the sum of its proper divisors (164849671503).

182821620465 is a wasteful number, since it uses less digits than its factorization.

182821620465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11907 (or 11725 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 182821620465 in words is "one hundred eighty-two billion, eight hundred twenty-one million, six hundred twenty thousand, four hundred sixty-five".