438685460486608 has 40 divisors (see below), whose sum is σ = 856718694272000. Its totient is φ = 217597059832320.

The previous prime is 438685460486591. The next prime is 438685460486681. The reversal of 438685460486608 is 806684064586834.

It is a super-2 number, since 2×438685460486608² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

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, 14635768 + ... + 33039016.

It is an arithmetic number, because the mean of its divisors is an integer number (21417967356800).

Almost surely, 2^{438685460486608} is an apocalyptic number.

It is an amenable number.

438685460486608 is a deficient number, since it is larger than the sum of its proper divisors (418033233785392).

438685460486608 is a wasteful number, since it uses less digits than its factorization.

438685460486608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18415115 (or 18415109 counting only the distinct ones).

The product of its (nonzero) digits is 5096079360, while the sum is 76.

The spelling of 438685460486608 in words is "four hundred thirty-eight trillion, six hundred eighty-five billion, four hundred sixty million, four hundred eighty-six thousand, six hundred eight".