156844811447 has 8 divisors (see below), whose sum is σ = 158204990592. Its totient is φ = 155487100600.

The previous prime is 156844811381. The next prime is 156844811449. The reversal of 156844811447 is 744118448651.

156844811447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156844811447 - 2³² = 152549844151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156844811449) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 489323 + ... + 743724.

It is an arithmetic number, because the mean of its divisors is an integer number (19775623824).

Almost surely, 2^156844811447 is an apocalyptic number.

156844811447 is a deficient number, since it is larger than the sum of its proper divisors (1360179145).

156844811447 is a wasteful number, since it uses less digits than its factorization.

156844811447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234149.

The product of its digits is 3440640, while the sum is 53.

The spelling of 156844811447 in words is "one hundred fifty-six billion, eight hundred forty-four million, eight hundred eleven thousand, four hundred forty-seven".