11916799305 has 16 divisors (see below), whose sum is σ = 19071852864. Its totient is φ = 6353968320.

The previous prime is 11916799303. The next prime is 11916799339. The reversal of 11916799305 is 50399761911.

It is a happy number.

It is not a de Polignac number, because 11916799305 - 2¹ = 11916799303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11916799303) 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, 43066 + ... + 160275.

It is an arithmetic number, because the mean of its divisors is an integer number (1191990804).

Almost surely, 2^11916799305 is an apocalyptic number.

11916799305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11916799305 is a deficient number, since it is larger than the sum of its proper divisors (7155053559).

11916799305 is a wasteful number, since it uses less digits than its factorization.

11916799305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207256.

The product of its (nonzero) digits is 459270, while the sum is 51.

The spelling of 11916799305 in words is "eleven billion, nine hundred sixteen million, seven hundred ninety-nine thousand, three hundred five".