438875140512 has 48 divisors (see below), whose sum is σ = 1219814733312. Its totient is φ = 137686318080.

The previous prime is 438875140499. The next prime is 438875140541. The reversal of 438875140512 is 215041578834.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×438875140512² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 134457664 + ... + 134460927.

It is an arithmetic number, because the mean of its divisors is an integer number (25412806944).

Almost surely, 2^438875140512 is an apocalyptic number.

It is an amenable number.

438875140512 is an abundant number, since it is smaller than the sum of its proper divisors (780939592800).

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

438875140512 is a wasteful number, since it uses less digits than its factorization.

438875140512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268918621 (or 268918613 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 438875140512 in words is "four hundred thirty-eight billion, eight hundred seventy-five million, one hundred forty thousand, five hundred twelve".