11523861834 has 16 divisors (see below), whose sum is σ = 23842473120. Its totient is φ = 3708829040.

The previous prime is 11523861821. The next prime is 11523861883. The reversal of 11523861834 is 43816832511.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33114372 + ... + 33114719.

It is an arithmetic number, because the mean of its divisors is an integer number (1490154570).

Almost surely, 2^11523861834 is an apocalyptic number.

11523861834 is an abundant number, since it is smaller than the sum of its proper divisors (12318611286).

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

11523861834 is a wasteful number, since it uses less digits than its factorization.

11523861834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66229125.

The product of its digits is 138240, while the sum is 42.

The spelling of 11523861834 in words is "eleven billion, five hundred twenty-three million, eight hundred sixty-one thousand, eight hundred thirty-four".