9012551409 has 12 divisors (see below), whose sum is σ = 13703294800. Its totient is φ = 5692137624.

The previous prime is 9012551399. The next prime is 9012551441. The reversal of 9012551409 is 9041552109.

9012551409 is a `hidden beast` number, since 90 + 12 + 551 + 4 + 0 + 9 = 666.

It is not a de Polignac number, because 9012551409 - 2¹⁹ = 9012027121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9012551459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26352319 + ... + 26352660.

Almost surely, 2^9012551409 is an apocalyptic number.

It is an amenable number.

9012551409 is a deficient number, since it is larger than the sum of its proper divisors (4690743391).

9012551409 is a wasteful number, since it uses less digits than its factorization.

9012551409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52705004 (or 52705001 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 36.

The square root of 9012551409 is about 94934.4584911085. The cubic root of 9012551409 is about 2081.0503362175.

The spelling of 9012551409 in words is "nine billion, twelve million, five hundred fifty-one thousand, four hundred nine".