172278491678496 has 288 divisors, whose sum is σ = 560309946618240. Its totient is φ = 49186851360768.

The previous prime is 172278491678483. The next prime is 172278491678519. The reversal of 172278491678496 is 694876194872271.

172278491678496 is a `hidden beast` number, since 1 + 7 + 2 + 2 + 7 + 8 + 49 + 16 + 78 + 496 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24165867060 + ... + 24165874188.

It is an arithmetic number, because the mean of its divisors is an integer number (1945520647980).

Almost surely, 2^{172278491678496} is an apocalyptic number.

172278491678496 is a gapful number since it is divisible by the number (16) 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 172278491678496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280154973309120).

172278491678496 is an abundant number, since it is smaller than the sum of its proper divisors (388031454939744).

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

172278491678496 is a wasteful number, since it uses less digits than its factorization.

172278491678496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14136 (or 14125 counting only the distinct ones).

The product of its digits is 4096770048, while the sum is 81.

The spelling of 172278491678496 in words is "one hundred seventy-two trillion, two hundred seventy-eight billion, four hundred ninety-one million, six hundred seventy-eight thousand, four hundred ninety-six".