11454471638 has 16 divisors (see below), whose sum is σ = 17931767040. Its totient is φ = 5477300136.

The previous prime is 11454471607. The next prime is 11454471673. The reversal of 11454471638 is 83617445411.

It is a congruent 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, 310373 + ... + 345311.

It is an arithmetic number, because the mean of its divisors is an integer number (1120735440).

Almost surely, 2^11454471638 is an apocalyptic number.

11454471638 is a deficient number, since it is larger than the sum of its proper divisors (6477295402).

11454471638 is a wasteful number, since it uses less digits than its factorization.

11454471638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42091.

The product of its digits is 322560, while the sum is 44.

The spelling of 11454471638 in words is "eleven billion, four hundred fifty-four million, four hundred seventy-one thousand, six hundred thirty-eight".