213844457064 has 64 divisors (see below), whose sum is σ = 612936339840. Its totient is φ = 60903198720.

The previous prime is 213844457051. The next prime is 213844457089. The reversal of 213844457064 is 460754448312.

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, 1980777 + ... + 2085944.

It is an arithmetic number, because the mean of its divisors is an integer number (9577130310).

Almost surely, 2^213844457064 is an apocalyptic number.

213844457064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213844457064 is an abundant number, since it is smaller than the sum of its proper divisors (399091882776).

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

213844457064 is a wasteful number, since it uses less digits than its factorization.

213844457064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4067050 (or 4067046 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 48.

The spelling of 213844457064 in words is "two hundred thirteen billion, eight hundred forty-four million, four hundred fifty-seven thousand, sixty-four".