164508133278 has 32 divisors (see below), whose sum is σ = 331779997440. Its totient is φ = 54376297920.

The previous prime is 164508133249. The next prime is 164508133301. The reversal of 164508133278 is 872331805461.

It is a super-2 number, since 2×164508133278² (a number of 23 digits) contains 22 as substring.

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, 646533 + ... + 864303.

It is an arithmetic number, because the mean of its divisors is an integer number (10368124920).

Almost surely, 2^164508133278 is an apocalyptic number.

164508133278 is an abundant number, since it is smaller than the sum of its proper divisors (167271864162).

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

164508133278 is a wasteful number, since it uses less digits than its factorization.

164508133278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218832.

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 164508133278 in words is "one hundred sixty-four billion, five hundred eight million, one hundred thirty-three thousand, two hundred seventy-eight".