163378135296 has 90 divisors (see below), whose sum is σ = 487164099422. Its totient is φ = 54459371520.

The previous prime is 163378135259. The next prime is 163378135303. The reversal of 163378135296 is 692531873361.

163378135296 is a `hidden beast` number, since 1 + 6 + 3 + 37 + 81 + 3 + 529 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 158990397696 + 4387737600 = 398736^2 + 66240^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 3918745 + ... + 3960216.

Almost surely, 2^163378135296 is an apocalyptic number.

163378135296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

163378135296 is an abundant number, since it is smaller than the sum of its proper divisors (323785964126).

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

163378135296 is an frugal number, since it uses more digits than its factorization.

163378135296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7878989 (or 7878966 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 54.

The spelling of 163378135296 in words is "one hundred sixty-three billion, three hundred seventy-eight million, one hundred thirty-five thousand, two hundred ninety-six".