11990534804 has 12 divisors (see below), whose sum is σ = 20985484128. Its totient is φ = 5994682200.

The previous prime is 11990534797. The next prime is 11990534807. The reversal of 11990534804 is 40843509911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11990534807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98462 + ... + 183509.

It is an arithmetic number, because the mean of its divisors is an integer number (1748790344).

Almost surely, 2^11990534804 is an apocalyptic number.

It is an amenable number.

11990534804 is a deficient number, since it is larger than the sum of its proper divisors (8994949324).

11990534804 is a wasteful number, since it uses less digits than its factorization.

11990534804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292606 (or 292604 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 44.

The spelling of 11990534804 in words is "eleven billion, nine hundred ninety million, five hundred thirty-four thousand, eight hundred four".