166023520004320 has 96 divisors (see below), whose sum is σ = 428812056207360. Its totient is φ = 60241795299840.

The previous prime is 166023520004273. The next prime is 166023520004333. The reversal of 166023520004320 is 23400025320661.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101055040 + ... + 102684799.

It is an arithmetic number, because the mean of its divisors is an integer number (4466792252160).

Almost surely, 2^{166023520004320} is an apocalyptic number.

166023520004320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166023520004320 is an abundant number, since it is smaller than the sum of its proper divisors (262788536203040).

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

166023520004320 is a wasteful number, since it uses less digits than its factorization.

166023520004320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203740328 (or 203740320 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 166023520004320 its reverse (23400025320661), we get a palindrome (189423545324981).

The spelling of 166023520004320 in words is "one hundred sixty-six trillion, twenty-three billion, five hundred twenty million, four thousand, three hundred twenty".