164617554220 has 24 divisors (see below), whose sum is σ = 395082130464. Its totient is φ = 56440304256.

The previous prime is 164617554203. The next prime is 164617554247. The reversal of 164617554220 is 22455716461.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 587919697 + ... + 587919976.

It is an arithmetic number, because the mean of its divisors is an integer number (16461755436).

Almost surely, 2^164617554220 is an apocalyptic number.

164617554220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164617554220 is an abundant number, since it is smaller than the sum of its proper divisors (230464576244).

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

164617554220 is a wasteful number, since it uses less digits than its factorization.

164617554220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175839689 (or 1175839687 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 164617554220 in words is "one hundred sixty-four billion, six hundred seventeen million, five hundred fifty-four thousand, two hundred twenty".