163434056356550 has 48 divisors (see below), whose sum is σ = 347438914605312. Its totient is φ = 56030532602400.

The previous prime is 163434056356481. The next prime is 163434056356559. The reversal of 163434056356550 is 55653650434361.

163434056356550 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×163434056356550² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163434056356559) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11760002 + ... + 21567701.

It is an arithmetic number, because the mean of its divisors is an integer number (7238310720944).

Almost surely, 2^{163434056356550} is an apocalyptic number.

163434056356550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163434056356550 is an abundant number, since it is smaller than the sum of its proper divisors (184004858248762).

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

163434056356550 is a wasteful number, since it uses less digits than its factorization.

163434056356550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33341733 (or 33341728 counting only the distinct ones).

The product of its (nonzero) digits is 58320000, while the sum is 56.

The spelling of 163434056356550 in words is "one hundred sixty-three trillion, four hundred thirty-four billion, fifty-six million, three hundred fifty-six thousand, five hundred fifty".