663424045125578 has 8 divisors (see below), whose sum is σ = 1085602982932800. Its totient is φ = 301556384147980.

The previous prime is 663424045125577. The next prime is 663424045125791. The reversal of 663424045125578 is 875521540424366.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 663424045125578.

It is not an unprimeable number, because it can be changed into a prime (663424045125577) 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, 15077819207378 + ... + 15077819207421.

It is an arithmetic number, because the mean of its divisors is an integer number (135700372866600).

Almost surely, 2^{663424045125578} is an apocalyptic number.

663424045125578 is a deficient number, since it is larger than the sum of its proper divisors (422178937807222).

663424045125578 is a wasteful number, since it uses less digits than its factorization.

663424045125578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30155638414812.

The product of its (nonzero) digits is 193536000, while the sum is 62.

The spelling of 663424045125578 in words is "six hundred sixty-three trillion, four hundred twenty-four billion, forty-five million, one hundred twenty-five thousand, five hundred seventy-eight".