2661530066 has 32 divisors (see below), whose sum is σ = 4378483200. Its totient is φ = 1205979840.

The previous prime is 2661530033. The next prime is 2661530093. The reversal of 2661530066 is 6600351662.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368195 + ... + 375353.

It is an arithmetic number, because the mean of its divisors is an integer number (136827600).

Almost surely, 2^2661530066 is an apocalyptic number.

2661530066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2661530066 is a deficient number, since it is larger than the sum of its proper divisors (1716953134).

2661530066 is a wasteful number, since it uses less digits than its factorization.

2661530066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7434.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 2661530066 is about 51590.0190540767. The cubic root of 2661530066 is about 1385.8315964019.

The spelling of 2661530066 in words is "two billion, six hundred sixty-one million, five hundred thirty thousand, sixty-six".