163111550256436 has 12 divisors (see below), whose sum is σ = 302236107828228. Its totient is φ = 76758376591232.

The previous prime is 163111550256379. The next prime is 163111550256439. The reversal of 163111550256436 is 634652055111361.

It can be written as a sum of positive squares in 2 ways, for example, as 153276928816036 + 9834621440400 = 12380506^2 + 3136020^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 163111550256436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163111550256439) 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 3 ways as a sum of consecutive naturals, for example, 1199349634171 + ... + 1199349634306.

It is an arithmetic number, because the mean of its divisors is an integer number (25186342319019).

Almost surely, 2^{163111550256436} is an apocalyptic number.

It is an amenable number.

163111550256436 is a deficient number, since it is larger than the sum of its proper divisors (139124557571792).

163111550256436 is a wasteful number, since it uses less digits than its factorization.

163111550256436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2398699268498 (or 2398699268496 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 49.

The spelling of 163111550256436 in words is "one hundred sixty-three trillion, one hundred eleven billion, five hundred fifty million, two hundred fifty-six thousand, four hundred thirty-six".