172888530997248 has 780 divisors, whose sum is σ = 586004829024384. Its totient is φ = 50700084019200.

The previous prime is 172888530997243. The next prime is 172888530997271. The reversal of 172888530997248 is 842799035888271.

172888530997248 is a `hidden beast` number, since 1 + 7 + 2 + 8 + 8 + 8 + 530 + 9 + 9 + 72 + 4 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172888530997243) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1244422315 + ... + 1244561237.

Almost surely, 2^{172888530997248} is an apocalyptic number.

172888530997248 is a gapful number since it is divisible by the number (18) 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 172888530997248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293002414512192).

172888530997248 is an abundant number, since it is smaller than the sum of its proper divisors (413116298027136).

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

172888530997248 is a wasteful number, since it uses less digits than its factorization.

172888530997248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139012 (or 138970 counting only the distinct ones).

The product of its (nonzero) digits is 3901685760, while the sum is 81.

The spelling of 172888530997248 in words is "one hundred seventy-two trillion, eight hundred eighty-eight billion, five hundred thirty million, nine hundred ninety-seven thousand, two hundred forty-eight".