667418370553 has 16 divisors (see below), whose sum is σ = 734871899520. Its totient is φ = 601096204800.

The previous prime is 667418370503. The next prime is 667418370581. The reversal of 667418370553 is 355073814766.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 667418370553 - 2¹³ = 667418362361 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 667418370494 and 667418370503.

It is not an unprimeable number, because it can be changed into a prime (667418370503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9931401 + ... + 9998377.

It is an arithmetic number, because the mean of its divisors is an integer number (45929493720).

Almost surely, 2^667418370553 is an apocalyptic number.

It is an amenable number.

667418370553 is a deficient number, since it is larger than the sum of its proper divisors (67453528967).

667418370553 is a wasteful number, since it uses less digits than its factorization.

667418370553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75408.

The product of its (nonzero) digits is 12700800, while the sum is 55.

The spelling of 667418370553 in words is "six hundred sixty-seven billion, four hundred eighteen million, three hundred seventy thousand, five hundred fifty-three".