162241446978 has 162 divisors, whose sum is σ = 389986998219. Its totient is φ = 48724213824.

The previous prime is 162241446967. The next prime is 162241447003. The reversal of 162241446978 is 879644142261.

162241446978 is a `hidden beast` number, since 1 + 622 + 4 + 1 + 4 + 4 + 6 + 9 + 7 + 8 = 666.

It can be written as a sum of positive squares in 5 ways, for example, as 51314481729 + 110926965249 = 226527^2 + 333057^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=284817.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 1488453588 + ... + 1488453696.

Almost surely, 2^162241446978 is an apocalyptic number.

162241446978 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 162241446978

162241446978 is an abundant number, since it is smaller than the sum of its proper divisors (227745551241).

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

162241446978 is a wasteful number, since it uses less digits than its factorization.

162241446978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386 (or 194 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 162241446978 in words is "one hundred sixty-two billion, two hundred forty-one million, four hundred forty-six thousand, nine hundred seventy-eight".