205067387240 has 32 divisors (see below), whose sum is σ = 461578166280. Its totient is φ = 81995569152.

The previous prime is 205067387233. The next prime is 205067387251. The reversal of 205067387240 is 42783760502.

It can be written as a sum of positive squares in 4 ways, for example, as 184733197636 + 20334189604 = 429806^2 + 142598^2 .

It is a super-2 number, since 2×205067387240² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205067387191 and 205067387200.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 874817 + ... + 1084176.

Almost surely, 2^205067387240 is an apocalyptic number.

205067387240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205067387240 is an abundant number, since it is smaller than the sum of its proper divisors (256510779040).

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

205067387240 is a wasteful number, since it uses less digits than its factorization.

205067387240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961621 (or 1961617 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 44.

The spelling of 205067387240 in words is "two hundred five billion, sixty-seven million, three hundred eighty-seven thousand, two hundred forty".