164645356446 has 48 divisors (see below), whose sum is σ = 359018805600. Its totient is φ = 54530187264.

The previous prime is 164645356409. The next prime is 164645356453. The reversal of 164645356446 is 644653546461.

164645356446 is a `hidden beast` number, since 1 + 6 + 4 + 6 + 4 + 535 + 64 + 46 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 164645356392 and 164645356401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8072950 + ... + 8093318.

It is an arithmetic number, because the mean of its divisors is an integer number (7479558450).

Almost surely, 2^164645356446 is an apocalyptic number.

164645356446 is an abundant number, since it is smaller than the sum of its proper divisors (194373449154).

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

164645356446 is a wasteful number, since it uses less digits than its factorization.

164645356446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23233 (or 23230 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 54.

The spelling of 164645356446 in words is "one hundred sixty-four billion, six hundred forty-five million, three hundred fifty-six thousand, four hundred forty-six".