11980990684 has 36 divisors (see below), whose sum is σ = 23132062296. Its totient is φ = 5425338048.

The previous prime is 11980990657. The next prime is 11980990699. The reversal of 11980990684 is 48609908911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131374 + ... + 203029.

It is an arithmetic number, because the mean of its divisors is an integer number (642557286).

Almost surely, 2^11980990684 is an apocalyptic number.

It is an amenable number.

11980990684 is a deficient number, since it is larger than the sum of its proper divisors (11151071612).

11980990684 is a wasteful number, since it uses less digits than its factorization.

11980990684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334486 (or 334471 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 55.

The spelling of 11980990684 in words is "eleven billion, nine hundred eighty million, nine hundred ninety thousand, six hundred eighty-four".