163511212503444 has 72 divisors (see below), whose sum is σ = 413135203666752. Its totient is φ = 50310737568000.

The previous prime is 163511212503439. The next prime is 163511212503451. The reversal of 163511212503444 is 444305212115361.

163511212503444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163511212503444² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 163511212503396 and 163511212503405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 339698944 + ... + 340179944.

It is an arithmetic number, because the mean of its divisors is an integer number (5737988939816).

Almost surely, 2^{163511212503444} is an apocalyptic number.

It is an amenable number.

163511212503444 is an abundant number, since it is smaller than the sum of its proper divisors (249623991163308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163511212503444 is a wasteful number, since it uses less digits than its factorization.

163511212503444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648657 (or 648642 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 42.

The spelling of 163511212503444 in words is "one hundred sixty-three trillion, five hundred eleven billion, two hundred twelve million, five hundred three thousand, four hundred forty-four".