164506555320 has 64 divisors (see below), whose sum is σ = 494015029920. Its totient is φ = 43824382464.

The previous prime is 164506555319. The next prime is 164506555351. The reversal of 164506555320 is 23555605461.

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, 567867 + ... + 807146.

Almost surely, 2^164506555320 is an apocalyptic number.

164506555320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164506555320 is an abundant number, since it is smaller than the sum of its proper divisors (329508474600).

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

164506555320 is a wasteful number, since it uses less digits than its factorization.

164506555320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376024 (or 1376020 counting only the distinct ones).

The product of its (nonzero) digits is 540000, while the sum is 42.

The spelling of 164506555320 in words is "one hundred sixty-four billion, five hundred six million, five hundred fifty-five thousand, three hundred twenty".