172345566848 has 256 divisors, whose sum is σ = 431429187840. Its totient is φ = 66766602240.

The previous prime is 172345566847. The next prime is 172345566853. The reversal of 172345566848 is 848665543271.

It is not an unprimeable number, because it can be changed into a prime (172345566847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133497083 + ... + 133498373.

It is an arithmetic number, because the mean of its divisors is an integer number (1685270265).

Almost surely, 2^172345566848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172345566848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215714593920).

172345566848 is an abundant number, since it is smaller than the sum of its proper divisors (259083620992).

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

172345566848 is a wasteful number, since it uses less digits than its factorization.

172345566848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555 (or 1543 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 59.

The spelling of 172345566848 in words is "one hundred seventy-two billion, three hundred forty-five million, five hundred sixty-six thousand, eight hundred forty-eight".