438263690445 has 80 divisors (see below), whose sum is σ = 950676300288. Its totient is φ = 188563852800.

The previous prime is 438263690393. The next prime is 438263690461. The reversal of 438263690445 is 544096362834.

438263690445 is a `hidden beast` number, since 4 + 3 + 82 + 6 + 36 + 90 + 445 = 666.

It is not a de Polignac number, because 438263690445 - 2⁹ = 438263689933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438263690391 and 438263690400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4498581 + ... + 4594970.

Almost surely, 2^438263690445 is an apocalyptic number.

438263690445 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

438263690445 is an abundant number, since it is smaller than the sum of its proper divisors (512412609843).

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

438263690445 is a wasteful number, since it uses less digits than its factorization.

438263690445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9093592 (or 9093583 counting only the distinct ones).

The product of its (nonzero) digits is 14929920, while the sum is 54.

The spelling of 438263690445 in words is "four hundred thirty-eight billion, two hundred sixty-three million, six hundred ninety thousand, four hundred forty-five".