663404054133451 has 16 divisors (see below), whose sum is σ = 739399389132960. Its totient is φ = 591516820523520.

The previous prime is 663404054133449. The next prime is 663404054133463. The reversal of 663404054133451 is 154331450404366.

It is not a de Polignac number, because 663404054133451 - 2¹ = 663404054133449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 663404054133395 and 663404054133404.

It is not an unprimeable number, because it can be changed into a prime (663404054133481) 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, 156613065 + ... + 160793221.

It is an arithmetic number, because the mean of its divisors is an integer number (46212461820810).

Almost surely, 2^{663404054133451} is an apocalyptic number.

663404054133451 is a deficient number, since it is larger than the sum of its proper divisors (75995334999509).

663404054133451 is a wasteful number, since it uses less digits than its factorization.

663404054133451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671534.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 663404054133451 in words is "six hundred sixty-three trillion, four hundred four billion, fifty-four million, one hundred thirty-three thousand, four hundred fifty-one".