162771949872 has 540 divisors, whose sum is σ = 564877175160. Its totient is φ = 44745305472.

The previous prime is 162771949867. The next prime is 162771949897. The reversal of 162771949872 is 278949177261.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

162771949872 is a `hidden beast` number, since 1 + 6 + 2 + 7 + 71 + 9 + 498 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

Its product of digits (21337344) is a multiple of the sum of its prime factors (243).

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 2758846579 + ... + 2758846637.

Almost surely, 2^162771949872 is an apocalyptic number.

162771949872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 162771949872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (282438587580).

162771949872 is an abundant number, since it is smaller than the sum of its proper divisors (402105225288).

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

162771949872 is an equidigital number, since it uses as much as digits as its factorization.

162771949872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243 (or 118 counting only the distinct ones).

The product of its digits is 21337344, while the sum is 63.

The spelling of 162771949872 in words is "one hundred sixty-two billion, seven hundred seventy-one million, nine hundred forty-nine thousand, eight hundred seventy-two".