12156155455804 has 24 divisors (see below), whose sum is σ = 21612334439808. Its totient is φ = 5981515765680.

The previous prime is 12156155455789. The next prime is 12156155455823. The reversal of 12156155455804 is 40855455165121.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38970214 + ... + 39280909.

It is an arithmetic number, because the mean of its divisors is an integer number (900513934992).

Almost surely, 2^{12156155455804} is an apocalyptic number.

It is an amenable number.

12156155455804 is a deficient number, since it is larger than the sum of its proper divisors (9456178984004).

12156155455804 is a wasteful number, since it uses less digits than its factorization.

12156155455804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78251745 (or 78251743 counting only the distinct ones).

The product of its (nonzero) digits is 4800000, while the sum is 52.

The spelling of 12156155455804 in words is "twelve trillion, one hundred fifty-six billion, one hundred fifty-five million, four hundred fifty-five thousand, eight hundred four".