172063939824 has 240 divisors, whose sum is σ = 590052189600. Its totient is φ = 47832228864.

The previous prime is 172063939823. The next prime is 172063939909. The reversal of 172063939824 is 428939360271.

172063939824 is a `hidden beast` number, since 17 + 206 + 39 + 398 + 2 + 4 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172063939823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 673372 + ... + 893060.

It is an arithmetic number, because the mean of its divisors is an integer number (2458550790).

Almost surely, 2^172063939824 is an apocalyptic number.

172063939824 is a gapful number since it is divisible by the number (14) 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 172063939824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295026094800).

172063939824 is an abundant number, since it is smaller than the sum of its proper divisors (417988249776).

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

172063939824 is a wasteful number, since it uses less digits than its factorization.

172063939824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219757 (or 219738 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 172063939824 in words is "one hundred seventy-two billion, sixty-three million, nine hundred thirty-nine thousand, eight hundred twenty-four".