213636919820625 has 160 divisors (see below), whose sum is σ = 453628771326720. Its totient is φ = 97310004480000.

The previous prime is 213636919820617. The next prime is 213636919820633. The reversal of 213636919820625 is 526028919636312.

It is a happy number.

213636919820625 is a `hidden beast` number, since 2 + 1 + 3 + 6 + 369 + 198 + 20 + 62 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (213636919820617) and next prime (213636919820633).

It is not a de Polignac number, because 213636919820625 - 2³ = 213636919820617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a partition number, being equal to the number of ways a set of 249 identical objects can be partitioned into subset.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 29456065 + ... + 35985185.

It is an arithmetic number, because the mean of its divisors is an integer number (2835179820792).

Almost surely, 2^{213636919820625} is an apocalyptic number.

213636919820625 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

213636919820625 is an abundant number, since it is smaller than the sum of its proper divisors (239991851506095).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213636919820625 is an equidigital number, since it uses as much as digits as its factorization.

213636919820625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529434 (or 6529413 counting only the distinct ones).

The product of its (nonzero) digits is 50388480, while the sum is 63.

The spelling of 213636919820625 in words is "two hundred thirteen trillion, six hundred thirty-six billion, nine hundred nineteen million, eight hundred twenty thousand, six hundred twenty-five".