438686241553 has 4 divisors (see below), whose sum is σ = 501355704640. Its totient is φ = 376016778468.

The previous prime is 438686241551. The next prime is 438686241569. The reversal of 438686241553 is 355142686834.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 438686241553 - 2¹ = 438686241551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 438686241494 and 438686241503.

It is not an unprimeable number, because it can be changed into a prime (438686241551) 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 3 ways as a sum of consecutive naturals, for example, 31334731533 + ... + 31334731546.

It is an arithmetic number, because the mean of its divisors is an integer number (125338926160).

Almost surely, 2^438686241553 is an apocalyptic number.

It is an amenable number.

438686241553 is a deficient number, since it is larger than the sum of its proper divisors (62669463087).

438686241553 is an equidigital number, since it uses as much as digits as its factorization.

438686241553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62669463086.

The product of its digits is 16588800, while the sum is 55.

The spelling of 438686241553 in words is "four hundred thirty-eight billion, six hundred eighty-six million, two hundred forty-one thousand, five hundred fifty-three".