11920206644 has 24 divisors (see below), whose sum is σ = 21664096608. Its totient is φ = 5734602720.

The previous prime is 11920206637. The next prime is 11920206647. The reversal of 11920206644 is 44660202911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11920206647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505667 + ... + 528714.

It is an arithmetic number, because the mean of its divisors is an integer number (902670692).

Almost surely, 2^11920206644 is an apocalyptic number.

It is an amenable number.

11920206644 is a deficient number, since it is larger than the sum of its proper divisors (9743889964).

11920206644 is a wasteful number, since it uses less digits than its factorization.

11920206644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034495 (or 1034493 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 11920206644 in words is "eleven billion, nine hundred twenty million, two hundred six thousand, six hundred forty-four".