10566009878 has 16 divisors (see below), whose sum is σ = 16244534880. Its totient is φ = 5151307200.

The previous prime is 10566009871. The next prime is 10566009893. The reversal of 10566009878 is 87890066501.

It is a happy number.

It is a super-2 number, since 2×10566009878² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10566009871) 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, 117983 + ... + 187221.

It is an arithmetic number, because the mean of its divisors is an integer number (1015283430).

Almost surely, 2^10566009878 is an apocalyptic number.

10566009878 is a deficient number, since it is larger than the sum of its proper divisors (5678525002).

10566009878 is a wasteful number, since it uses less digits than its factorization.

10566009878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71143.

The product of its (nonzero) digits is 725760, while the sum is 50.

The spelling of 10566009878 in words is "ten billion, five hundred sixty-six million, nine thousand, eight hundred seventy-eight".