213250635455640 has 128 divisors (see below), whose sum is σ = 682907891673600. Its totient is φ = 53115058160640.

The previous prime is 213250635455639. The next prime is 213250635455657. The reversal of 213250635455640 is 46554536052312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 658506997 + ... + 658830756.

It is an arithmetic number, because the mean of its divisors is an integer number (5335217903700).

Almost surely, 2^{213250635455640} is an apocalyptic number.

213250635455640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213250635455640 is an abundant number, since it is smaller than the sum of its proper divisors (469657256217960).

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

213250635455640 is a wasteful number, since it uses less digits than its factorization.

213250635455640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317337857 (or 1317337853 counting only the distinct ones).

The product of its (nonzero) digits is 12960000, while the sum is 51.

The spelling of 213250635455640 in words is "two hundred thirteen trillion, two hundred fifty billion, six hundred thirty-five million, four hundred fifty-five thousand, six hundred forty".