213241758660 has 144 divisors (see below), whose sum is σ = 740458607616. Its totient is φ = 48660500736.

The previous prime is 213241758647. The next prime is 213241758661. The reversal of 213241758660 is 66857142312.

213241758660 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 4 + 1 + 7 + 586 + 60 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (213241758661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 625414 + ... + 904226.

It is an arithmetic number, because the mean of its divisors is an integer number (5142073664).

Almost surely, 2^213241758660 is an apocalyptic number.

213241758660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213241758660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370229303808).

213241758660 is an abundant number, since it is smaller than the sum of its proper divisors (527216848956).

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

213241758660 is a wasteful number, since it uses less digits than its factorization.

213241758660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279442 (or 279437 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 213241758660 in words is "two hundred thirteen billion, two hundred forty-one million, seven hundred fifty-eight thousand, six hundred sixty".