438672660680 has 16 divisors (see below), whose sum is σ = 987013486620. Its totient is φ = 175469064256.

The previous prime is 438672660653. The next prime is 438672660683. The reversal of 438672660680 is 86066276834.

It can be written as a sum of positive squares in 2 ways, for example, as 436743869956 + 1928790724 = 660866^2 + 43918^2 .

It is not an unprimeable number, because it can be changed into a prime (438672660683) 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, 5483408219 + ... + 5483408298.

Almost surely, 2^438672660680 is an apocalyptic number.

438672660680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

438672660680 is an abundant number, since it is smaller than the sum of its proper divisors (548340825940).

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

438672660680 is a wasteful number, since it uses less digits than its factorization.

438672660680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10966816528 (or 10966816524 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 56.

The spelling of 438672660680 in words is "four hundred thirty-eight billion, six hundred seventy-two million, six hundred sixty thousand, six hundred eighty".