213598781396 has 192 divisors, whose sum is σ = 514068172800. Its totient is φ = 76527400320.

The previous prime is 213598781393. The next prime is 213598781399. The reversal of 213598781396 is 693187895312.

It is an interprime number because it is at equal distance from previous prime (213598781393) and next prime (213598781399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213598781393) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 55521545 + ... + 55525391.

It is an arithmetic number, because the mean of its divisors is an integer number (2677438400).

Almost surely, 2^213598781396 is an apocalyptic number.

213598781396 is a gapful number since it is divisible by the number (26) 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 213598781396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257034086400).

213598781396 is an abundant number, since it is smaller than the sum of its proper divisors (300469391404).

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

213598781396 is a wasteful number, since it uses less digits than its factorization.

213598781396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179 (or 4163 counting only the distinct ones).

The product of its digits is 19595520, while the sum is 62.

The spelling of 213598781396 in words is "two hundred thirteen billion, five hundred ninety-eight million, seven hundred eighty-one thousand, three hundred ninety-six".