438673625887668 has 12 divisors (see below), whose sum is σ = 1023571793737920. Its totient is φ = 146224541962552.

The previous prime is 438673625887531. The next prime is 438673625887669. The reversal of 438673625887668 is 866788526376834.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438673625887669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18278067745308 + ... + 18278067745331.

It is an arithmetic number, because the mean of its divisors is an integer number (85297649478160).

Almost surely, 2^{438673625887668} is an apocalyptic number.

It is an amenable number.

438673625887668 is an abundant number, since it is smaller than the sum of its proper divisors (584898167850252).

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

438673625887668 is a wasteful number, since it uses less digits than its factorization.

438673625887668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36556135490646 (or 36556135490644 counting only the distinct ones).

The product of its digits is 93640458240, while the sum is 87.

The spelling of 438673625887668 in words is "four hundred thirty-eight trillion, six hundred seventy-three billion, six hundred twenty-five million, eight hundred eighty-seven thousand, six hundred sixty-eight".