164215863980 has 24 divisors (see below), whose sum is σ = 394118073888. Its totient is φ = 56302581888.

The previous prime is 164215863967. The next prime is 164215863997. The reversal of 164215863980 is 89368512461.

It is a super-3 number, since 3×164215863980³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 586485089 + ... + 586485368.

It is an arithmetic number, because the mean of its divisors is an integer number (16421586412).

Almost surely, 2^164215863980 is an apocalyptic number.

164215863980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164215863980 is an abundant number, since it is smaller than the sum of its proper divisors (229902209908).

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

164215863980 is a wasteful number, since it uses less digits than its factorization.

164215863980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172970473 (or 1172970471 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The spelling of 164215863980 in words is "one hundred sixty-four billion, two hundred fifteen million, eight hundred sixty-three thousand, nine hundred eighty".