213844495956 has 48 divisors (see below), whose sum is σ = 614117529984. Its totient is φ = 56398548096.

The previous prime is 213844495913. The next prime is 213844495967. The reversal of 213844495956 is 659594448312.

It is a self number, because there is not a number n which added to its sum of digits gives 213844495956.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97913055 + ... + 97915238.

It is an arithmetic number, because the mean of its divisors is an integer number (12794115208).

Almost surely, 2^213844495956 is an apocalyptic number.

213844495956 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

213844495956 is an abundant number, since it is smaller than the sum of its proper divisors (400273034028).

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

213844495956 is a wasteful number, since it uses less digits than its factorization.

213844495956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195828320 (or 195828318 counting only the distinct ones).

The product of its digits is 37324800, while the sum is 60.

The spelling of 213844495956 in words is "two hundred thirteen billion, eight hundred forty-four million, four hundred ninety-five thousand, nine hundred fifty-six".