445974128172 has 36 divisors (see below), whose sum is σ = 1127907469416. Its totient is φ = 148581034560.

The previous prime is 445974128147. The next prime is 445974128189. The reversal of 445974128172 is 271821479544.

It is a happy number.

445974128172 is a `hidden beast` number, since 4 + 4 + 59 + 7 + 412 + 8 + 172 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×445974128172³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3138193 + ... + 3277224.

Almost surely, 2^445974128172 is an apocalyptic number.

It is an amenable number.

445974128172 is an abundant number, since it is smaller than the sum of its proper divisors (681933341244).

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

445974128172 is a wasteful number, since it uses less digits than its factorization.

445974128172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6417358 (or 6417353 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The spelling of 445974128172 in words is "four hundred forty-five billion, nine hundred seventy-four million, one hundred twenty-eight thousand, one hundred seventy-two".