11955811802 has 24 divisors (see below), whose sum is σ = 20046398400. Its totient is φ = 5342344040.

The previous prime is 11955811771. The next prime is 11955811873. The reversal of 11955811802 is 20811855911.

It is a self number, because there is not a number n which added to its sum of digits gives 11955811802.

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 in 11 ways as a sum of consecutive naturals, for example, 404402 + ... + 432957.

It is an arithmetic number, because the mean of its divisors is an integer number (835266600).

Almost surely, 2^11955811802 is an apocalyptic number.

11955811802 is a deficient number, since it is larger than the sum of its proper divisors (8090586598).

11955811802 is a wasteful number, since it uses less digits than its factorization.

11955811802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837442 (or 837431 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 41.

The spelling of 11955811802 in words is "eleven billion, nine hundred fifty-five million, eight hundred eleven thousand, eight hundred two".