172851000000 has 392 divisors, whose sum is σ = 653406636288. Its totient is φ = 39504000000.

The previous prime is 172850999983. The next prime is 172851000037. The reversal of 172851000000 is 158271.

172851000000 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 20995885 + ... + 21004115.

It is an arithmetic number, because the mean of its divisors is an integer number (1666853664).

Almost surely, 2^172851000000 is an apocalyptic number.

172851000000 is a gapful number since it is divisible by the number (10) 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 172851000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (326703318144).

172851000000 is an abundant number, since it is smaller than the sum of its proper divisors (480555636288).

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

172851000000 is an frugal number, since it uses more digits than its factorization.

172851000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8283 (or 8248 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

Adding to 172851000000 its reverse (158271), we get a palindrome (172851158271).

The spelling of 172851000000 in words is "one hundred seventy-two billion, eight hundred fifty-one million", and thus it is an aban number.