10066515138 has 32 divisors (see below), whose sum is σ = 22459187520. Its totient is φ = 3342132000.

The previous prime is 10066515101. The next prime is 10066515139. The reversal of 10066515138 is 83151566001.

10066515138 is a `hidden beast` number, since 1 + 0 + 0 + 6 + 6 + 515 + 138 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10066515139) 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, 357795 + ... + 384902.

It is an arithmetic number, because the mean of its divisors is an integer number (701849610).

Almost surely, 2^10066515138 is an apocalyptic number.

10066515138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

10066515138 is an abundant number, since it is smaller than the sum of its proper divisors (12392672382).

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

10066515138 is a wasteful number, since it uses less digits than its factorization.

10066515138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742959 (or 742953 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The spelling of 10066515138 in words is "ten billion, sixty-six million, five hundred fifteen thousand, one hundred thirty-eight".