667438516153 has 4 divisors (see below), whose sum is σ = 669257150080. Its totient is φ = 665619882228.

The previous prime is 667438516127. The next prime is 667438516169. The reversal of 667438516153 is 351615834766.

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 a de Polignac number, because none of the positive numbers 2^k-667438516153 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 667438516094 and 667438516103.

It is not an unprimeable number, because it can be changed into a prime (667438516123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909316413 + ... + 909317146.

It is an arithmetic number, because the mean of its divisors is an integer number (167314287520).

Almost surely, 2^667438516153 is an apocalyptic number.

It is an amenable number.

667438516153 is a deficient number, since it is larger than the sum of its proper divisors (1818633927).

667438516153 is a wasteful number, since it uses less digits than its factorization.

667438516153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818633926.

The product of its digits is 10886400, while the sum is 55.

The spelling of 667438516153 in words is "six hundred sixty-seven billion, four hundred thirty-eight million, five hundred sixteen thousand, one hundred fifty-three".