2660511531 has 4 divisors (see below), whose sum is σ = 3547348712. Its totient is φ = 1773674352.

The previous prime is 2660511493. The next prime is 2660511559. The reversal of 2660511531 is 1351150662.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2660511531 - 2⁹ = 2660511019 is a prime.

It is a super-2 number, since 2×2660511531² = 14156643213167927922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660511571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 443418586 + ... + 443418591.

It is an arithmetic number, because the mean of its divisors is an integer number (886837178).

Almost surely, 2^2660511531 is an apocalyptic number.

2660511531 is a deficient number, since it is larger than the sum of its proper divisors (886837181).

2660511531 is an equidigital number, since it uses as much as digits as its factorization.

2660511531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886837180.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 2660511531 is about 51580.1466748593. The cubic root of 2660511531 is about 1385.6547935798.

The spelling of 2660511531 in words is "two billion, six hundred sixty million, five hundred eleven thousand, five hundred thirty-one".