266506040430 has 80 divisors (see below), whose sum is σ = 818977309920. Its totient is φ = 60915665088.

The previous prime is 266506040401. The next prime is 266506040443. The reversal of 266506040430 is 34040605662.

266506040430 is a `hidden beast` number, since 2 + 6 + 6 + 5 + 0 + 604 + 0 + 43 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 23495745 + ... + 23507084.

It is an arithmetic number, because the mean of its divisors is an integer number (10237216374).

Almost surely, 2^266506040430 is an apocalyptic number.

266506040430 is an abundant number, since it is smaller than the sum of its proper divisors (552471269490).

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

266506040430 is a wasteful number, since it uses less digits than its factorization.

266506040430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47002855 (or 47002846 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 266506040430 in words is "two hundred sixty-six billion, five hundred six million, forty thousand, four hundred thirty".