850126412529 has 27 divisors (see below), whose sum is σ = 1275236862393. Its totient is φ = 566701152444.

The previous prime is 850126412519. The next prime is 850126412567. The reversal of 850126412529 is 925214621058.

The square root of 850126412529 is 922023.

It is a perfect power (a square), and thus also a powerful number.

850126412529 is a `hidden beast` number, since 8 + 50 + 1 + 2 + 64 + 12 + 529 = 666.

It is a tau number, because it is divible by the number of its divisors (27).

It is not a de Polignac number, because 850126412529 - 2²⁷ = 849992194801 is a prime.

It is not an unprimeable number, because it can be changed into a prime (850126412519) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 74678172 + ... + 74689554.

Almost surely, 2^850126412529 is an apocalyptic number.

850126412529 is the 922023-rd square number.

850126412529 is the 461012-nd centered octagonal number.

It is an amenable number.

850126412529 is a deficient number, since it is larger than the sum of its proper divisors (425110449864).

850126412529 is an frugal number, since it uses more digits than its factorization.

850126412529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22790 (or 11386 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The spelling of 850126412529 in words is "eight hundred fifty billion, one hundred twenty-six million, four hundred twelve thousand, five hundred twenty-nine".