172587220992 has 250 divisors, whose sum is σ = 519691027328. Its totient is φ = 57076088832.

The previous prime is 172587220951. The next prime is 172587221021. The reversal of 172587220992 is 299022785271.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1358954433 + ... + 1358954559.

Almost surely, 2^172587220992 is an apocalyptic number.

172587220992 is a gapful number since it is divisible by the number (12) 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 172587220992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259845513664).

172587220992 is an abundant number, since it is smaller than the sum of its proper divisors (347103806336).

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

172587220992 is an frugal number, since it uses more digits than its factorization.

172587220992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 132 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 54.

The spelling of 172587220992 in words is "one hundred seventy-two billion, five hundred eighty-seven million, two hundred twenty thousand, nine hundred ninety-two".