101728463922 has 42 divisors (see below), whose sum is σ = 228811777677. Its totient is φ = 33905428416.

The previous prime is 101728463857. The next prime is 101728463923. The reversal of 101728463922 is 229364827101.

101728463922 is a `hidden beast` number, since 1 + 0 + 1 + 7 + 2 + 8 + 4 + 639 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 99060638121 + 2667825801 = 314739^2 + 51651^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=225531.

It is not an unprimeable number, because it can be changed into a prime (101728463923) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 12174498 + ... + 12182850.

Almost surely, 2^101728463922 is an apocalyptic number.

101728463922 is an abundant number, since it is smaller than the sum of its proper divisors (127083313755).

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

101728463922 is an frugal number, since it uses more digits than its factorization.

101728463922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16726 (or 8358 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 101728463922 in words is "one hundred one billion, seven hundred twenty-eight million, four hundred sixty-three thousand, nine hundred twenty-two".