205487330040 has 48 divisors (see below), whose sum is σ = 667833823800. Its totient is φ = 54796621248.

The previous prime is 205487330039. The next prime is 205487330053. The reversal of 205487330040 is 40033784502.

It is a happy number.

205487330040 is a `hidden beast` number, since 2 + 0 + 548 + 73 + 3 + 0 + 0 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 205487329977 and 205487330004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 285398710 + ... + 285399429.

Almost surely, 2^205487330040 is an apocalyptic number.

205487330040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205487330040 is an abundant number, since it is smaller than the sum of its proper divisors (462346493760).

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

205487330040 is a wasteful number, since it uses less digits than its factorization.

205487330040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570798156 (or 570798149 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The spelling of 205487330040 in words is "two hundred five billion, four hundred eighty-seven million, three hundred thirty thousand, forty".