164722923648 has 128 divisors (see below), whose sum is σ = 514759320000. Its totient is φ = 51677761536.

The previous prime is 164722923619. The next prime is 164722923661. The reversal of 164722923648 is 846329227461.

It is a happy number.

164722923648 is a `hidden beast` number, since 16 + 47 + 229 + 2 + 364 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 164722923594 and 164722923603.

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, 1343098 + ... + 1460601.

Almost surely, 2^164722923648 is an apocalyptic number.

164722923648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164722923648 is an abundant number, since it is smaller than the sum of its proper divisors (350036396352).

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

164722923648 is a wasteful number, since it uses less digits than its factorization.

164722923648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803739 (or 2803721 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 54.

The spelling of 164722923648 in words is "one hundred sixty-four billion, seven hundred twenty-two million, nine hundred twenty-three thousand, six hundred forty-eight".