205576131490 has 16 divisors (see below), whose sum is σ = 375559978752. Its totient is φ = 81003132144.

The previous prime is 205576131487. The next prime is 205576131491. The reversal of 205576131490 is 94131675502.

It is not an unprimeable number, because it can be changed into a prime (205576131491) 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, 153414354 + ... + 153415693.

It is an arithmetic number, because the mean of its divisors is an integer number (23472498672).

Almost surely, 2^205576131490 is an apocalyptic number.

205576131490 is a deficient number, since it is larger than the sum of its proper divisors (169983847262).

205576131490 is a wasteful number, since it uses less digits than its factorization.

205576131490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306830121.

The product of its (nonzero) digits is 226800, while the sum is 43.

The spelling of 205576131490 in words is "two hundred five billion, five hundred seventy-six million, one hundred thirty-one thousand, four hundred ninety".