438678783020 has 24 divisors (see below), whose sum is σ = 926741771424. Its totient is φ = 174420784256.

The previous prime is 438678783017. The next prime is 438678783029. The reversal of 438678783020 is 20387876834.

It is not an unprimeable number, because it can be changed into a prime (438678783029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65667137 + ... + 65673816.

It is an arithmetic number, because the mean of its divisors is an integer number (38614240476).

Almost surely, 2^438678783020 is an apocalyptic number.

It is an amenable number.

438678783020 is an abundant number, since it is smaller than the sum of its proper divisors (488062988404).

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

438678783020 is a wasteful number, since it uses less digits than its factorization.

438678783020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131341129 (or 131341127 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 56.

The spelling of 438678783020 in words is "four hundred thirty-eight billion, six hundred seventy-eight million, seven hundred eighty-three thousand, twenty".