438998146065 has 16 divisors (see below), whose sum is σ = 780441148800. Its totient is φ = 234132344496.

The previous prime is 438998146061. The next prime is 438998146087. The reversal of 438998146065 is 560641899834.

438998146065 is a `hidden beast` number, since 4 + 3 + 8 + 9 + 9 + 8 + 14 + 606 + 5 = 666.

It is not a de Polignac number, because 438998146065 - 2² = 438998146061 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438998145993 and 438998146011.

It is not an unprimeable number, because it can be changed into a prime (438998146061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1625918925 + ... + 1625919194.

It is an arithmetic number, because the mean of its divisors is an integer number (48777571800).

Almost surely, 2^438998146065 is an apocalyptic number.

438998146065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

438998146065 is a deficient number, since it is larger than the sum of its proper divisors (341443002735).

438998146065 is a wasteful number, since it uses less digits than its factorization.

438998146065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3251838133 (or 3251838127 counting only the distinct ones).

The product of its (nonzero) digits is 44789760, while the sum is 63.

The spelling of 438998146065 in words is "four hundred thirty-eight billion, nine hundred ninety-eight million, one hundred forty-six thousand, sixty-five".