11919979102 has 4 divisors (see below), whose sum is σ = 17879968656. Its totient is φ = 5959989550.

The previous prime is 11919979091. The next prime is 11919979111. The reversal of 11919979102 is 20197991911.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2979994774 + ... + 2979994777.

It is an arithmetic number, because the mean of its divisors is an integer number (4469992164).

Almost surely, 2^11919979102 is an apocalyptic number.

11919979102 is a deficient number, since it is larger than the sum of its proper divisors (5959989554).

11919979102 is an equidigital number, since it uses as much as digits as its factorization.

11919979102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5959989553.

The product of its (nonzero) digits is 91854, while the sum is 49.

The spelling of 11919979102 in words is "eleven billion, nine hundred nineteen million, nine hundred seventy-nine thousand, one hundred two".