437645133945 has 40 divisors (see below), whose sum is σ = 787026105096. Its totient is φ = 232664949504.

The previous prime is 437645133929. The next prime is 437645133971. The reversal of 437645133945 is 549331546734.

437645133945 is a `hidden beast` number, since 4 + 3 + 76 + 451 + 33 + 94 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 5806897209 + 431838236736 = 76203^2 + 657144^2 .

It is not a de Polignac number, because 437645133945 - 2⁴ = 437645133929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 437645133891 and 437645133900.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1599442 + ... + 1852971.

Almost surely, 2^437645133945 is an apocalyptic number.

437645133945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

437645133945 is a deficient number, since it is larger than the sum of its proper divisors (349380971151).

437645133945 is a wasteful number, since it uses less digits than its factorization.

437645133945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452743 (or 3452734 counting only the distinct ones).

The product of its digits is 16329600, while the sum is 54.

The spelling of 437645133945 in words is "four hundred thirty-seven billion, six hundred forty-five million, one hundred thirty-three thousand, nine hundred forty-five".