172466599903728 has 160 divisors (see below), whose sum is σ = 508840244140032. Its totient is φ = 49865924505600.

The previous prime is 172466599903721. The next prime is 172466599903729. The reversal of 172466599903728 is 827309995664271.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172466599903721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6189208 + ... + 19576503.

It is a 1-persistent number, because it is pandigital, but 2⋅172466599903728 = 344933199807456 is not.

Almost surely, 2^{172466599903728} is an apocalyptic number.

It is an amenable number.

172466599903728 is an abundant number, since it is smaller than the sum of its proper divisors (336373644236304).

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

172466599903728 is a wasteful number, since it uses less digits than its factorization.

172466599903728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25766383 (or 25766377 counting only the distinct ones).

The product of its (nonzero) digits is 2469035520, while the sum is 78.

The spelling of 172466599903728 in words is "one hundred seventy-two trillion, four hundred sixty-six billion, five hundred ninety-nine million, nine hundred three thousand, seven hundred twenty-eight".