11434854721 has 16 divisors (see below), whose sum is σ = 12868502400. Its totient is φ = 10096766208.

The previous prime is 11434854713. The next prime is 11434854727. The reversal of 11434854721 is 12745843411.

It is not a de Polignac number, because 11434854721 - 2³ = 11434854713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11434854727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138586 + ... + 205123.

It is an arithmetic number, because the mean of its divisors is an integer number (804281400).

Almost surely, 2^11434854721 is an apocalyptic number.

It is an amenable number.

11434854721 is a deficient number, since it is larger than the sum of its proper divisors (1433647679).

11434854721 is a wasteful number, since it uses less digits than its factorization.

11434854721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343848.

The product of its digits is 107520, while the sum is 40.

The spelling of 11434854721 in words is "eleven billion, four hundred thirty-four million, eight hundred fifty-four thousand, seven hundred twenty-one".