11945664910 has 32 divisors (see below), whose sum is σ = 21734171424. Its totient is φ = 4726800000.

The previous prime is 11945664893. The next prime is 11945664917. The reversal of 11945664910 is 1946654911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11945664917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1309465 + ... + 1318555.

It is an arithmetic number, because the mean of its divisors is an integer number (679192857).

Almost surely, 2^11945664910 is an apocalyptic number.

11945664910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11945664910 is a deficient number, since it is larger than the sum of its proper divisors (9788506514).

11945664910 is a wasteful number, since it uses less digits than its factorization.

11945664910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10500.

The product of its (nonzero) digits is 233280, while the sum is 46.

Subtracting from 11945664910 its reverse (1946654911), we obtain a palindrome (9999009999).

The spelling of 11945664910 in words is "eleven billion, nine hundred forty-five million, six hundred sixty-four thousand, nine hundred ten".