213377724500 has 24 divisors (see below), whose sum is σ = 466016951400. Its totient is φ = 85351089600.

The previous prime is 213377724491. The next prime is 213377724503. The reversal of 213377724500 is 5427773312.

It can be written as a sum of positive squares in 4 ways, for example, as 674129296 + 212703595204 = 25964^2 + 461198^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213377724503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213377225 + ... + 213378224.

It is an arithmetic number, because the mean of its divisors is an integer number (19417372975).

Almost surely, 2^213377724500 is an apocalyptic number.

213377724500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213377724500 is an abundant number, since it is smaller than the sum of its proper divisors (252639226900).

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

213377724500 is a wasteful number, since it uses less digits than its factorization.

213377724500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426755468 (or 426755456 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 41.

The spelling of 213377724500 in words is "two hundred thirteen billion, three hundred seventy-seven million, seven hundred twenty-four thousand, five hundred".