438336077988 has 24 divisors (see below), whose sum is σ = 1058052602880. Its totient is φ = 141073680160.

The previous prime is 438336077969. The next prime is 438336078007. The reversal of 438336077988 is 889770633834.

It is an interprime number because it is at equal distance from previous prime (438336077969) and next prime (438336078007).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629792868 + ... + 629793563.

It is an arithmetic number, because the mean of its divisors is an integer number (44085525120).

Almost surely, 2^438336077988 is an apocalyptic number.

It is an amenable number.

438336077988 is an abundant number, since it is smaller than the sum of its proper divisors (619716524892).

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

438336077988 is a wasteful number, since it uses less digits than its factorization.

438336077988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259586467 (or 1259586465 counting only the distinct ones).

The product of its (nonzero) digits is 146313216, while the sum is 66.

The spelling of 438336077988 in words is "four hundred thirty-eight billion, three hundred thirty-six million, seventy-seven thousand, nine hundred eighty-eight".