213274591488 has 432 divisors, whose sum is σ = 742629154176. Its totient is φ = 59779399680.

The previous prime is 213274591483. The next prime is 213274591583. The reversal of 213274591488 is 884195472312.

213274591488 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 7 + 4 + 591 + 48 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (213274591483) 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, 23074548 + ... + 23083788.

It is an arithmetic number, because the mean of its divisors is an integer number (1719048968).

Almost surely, 2^213274591488 is an apocalyptic number.

213274591488 is a gapful number since it is divisible by the number (28) 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 213274591488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371314577088).

213274591488 is an abundant number, since it is smaller than the sum of its proper divisors (529354562688).

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

213274591488 is an frugal number, since it uses more digits than its factorization.

213274591488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332 (or 9306 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The spelling of 213274591488 in words is "two hundred thirteen billion, two hundred seventy-four million, five hundred ninety-one thousand, four hundred eighty-eight".