438527228664 has 64 divisors (see below), whose sum is σ = 1318878892800. Its totient is φ = 118699098624.

The previous prime is 438527228663. The next prime is 438527228719. The reversal of 438527228664 is 466822725834.

It is a super-2 number, since 2×438527228664² (a number of 24 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (57) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (438527228663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68688417 + ... + 68694800.

It is an arithmetic number, because the mean of its divisors is an integer number (20607482700).

Almost surely, 2^438527228664 is an apocalyptic number.

It is an amenable number.

438527228664 is an abundant number, since it is smaller than the sum of its proper divisors (880351664136).

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

438527228664 is a wasteful number, since it uses less digits than its factorization.

438527228664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137383252 (or 137383248 counting only the distinct ones).

The product of its digits is 30965760, while the sum is 57.

The spelling of 438527228664 in words is "four hundred thirty-eight billion, five hundred twenty-seven million, two hundred twenty-eight thousand, six hundred sixty-four".