11471994634 has 8 divisors (see below), whose sum is σ = 17212506948. Its totient is φ = 5734492320.

The previous prime is 11471994623. The next prime is 11471994659. The reversal of 11471994634 is 43649917411.

It can be written as a sum of positive squares in 2 ways, for example, as 10829524225 + 642470409 = 104065^2 + 25347^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 742947 + ... + 758230.

Almost surely, 2^11471994634 is an apocalyptic number.

11471994634 is a deficient number, since it is larger than the sum of its proper divisors (5740512314).

11471994634 is a wasteful number, since it uses less digits than its factorization.

11471994634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505000.

The product of its digits is 653184, while the sum is 49.

The spelling of 11471994634 in words is "eleven billion, four hundred seventy-one million, nine hundred ninety-four thousand, six hundred thirty-four".