205877905480 has 64 divisors (see below), whose sum is σ = 516060039600. Its totient is φ = 73395194880.

The previous prime is 205877905469. The next prime is 205877905483. The reversal of 205877905480 is 84509778502.

It can be written as a sum of positive squares in 8 ways, for example, as 121897343044 + 83980562436 = 349138^2 + 289794^2 .

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (205877905483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6811111 + ... + 6841270.

Almost surely, 2^205877905480 is an apocalyptic number.

205877905480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205877905480 is an abundant number, since it is smaller than the sum of its proper divisors (310182134120).

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

205877905480 is a wasteful number, since it uses less digits than its factorization.

205877905480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13652434 (or 13652430 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 55.

The spelling of 205877905480 in words is "two hundred five billion, eight hundred seventy-seven million, nine hundred five thousand, four hundred eighty".