213870051960 has 128 divisors (see below), whose sum is σ = 647285506560. Its totient is φ = 56529216000.

The previous prime is 213870051949. The next prime is 213870051973. The reversal of 213870051960 is 69150078312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8340519 + ... + 8366121.

It is an arithmetic number, because the mean of its divisors is an integer number (5056918020).

Almost surely, 2^213870051960 is an apocalyptic number.

213870051960 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 213870051960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (323642753280).

213870051960 is an abundant number, since it is smaller than the sum of its proper divisors (433415454600).

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

213870051960 is a wasteful number, since it uses less digits than its factorization.

213870051960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26229 (or 26225 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 213870051960 in words is "two hundred thirteen billion, eight hundred seventy million, fifty-one thousand, nine hundred sixty".