438640058628780 has 24 divisors (see below), whose sum is σ = 1228192164160752. Its totient is φ = 116970682300992.

The previous prime is 438640058628767. The next prime is 438640058628841. The reversal of 438640058628780 is 87826850046834.

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, 3655333821847 + ... + 3655333821966.

It is an arithmetic number, because the mean of its divisors is an integer number (51174673506698).

Almost surely, 2^{438640058628780} is an apocalyptic number.

It is an amenable number.

438640058628780 is an abundant number, since it is smaller than the sum of its proper divisors (789552105531972).

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

438640058628780 is a wasteful number, since it uses less digits than its factorization.

438640058628780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7310667643825 (or 7310667643823 counting only the distinct ones).

The product of its (nonzero) digits is 495452160, while the sum is 69.

The spelling of 438640058628780 in words is "four hundred thirty-eight trillion, six hundred forty billion, fifty-eight million, six hundred twenty-eight thousand, seven hundred eighty".