663541070455 has 16 divisors (see below), whose sum is σ = 817420754304. Its totient is φ = 516798969120.

The previous prime is 663541070447. The next prime is 663541070461. The reversal of 663541070455 is 554070145366.

It is not a de Polignac number, because 663541070455 - 2³ = 663541070447 is a prime.

It is a super-3 number, since 3×663541070455³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4960441 + ... + 5092450.

It is an arithmetic number, because the mean of its divisors is an integer number (51088797144).

Almost surely, 2^663541070455 is an apocalyptic number.

663541070455 is a deficient number, since it is larger than the sum of its proper divisors (153879683849).

663541070455 is a wasteful number, since it uses less digits than its factorization.

663541070455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053246.

The product of its (nonzero) digits is 1512000, while the sum is 46.

The spelling of 663541070455 in words is "six hundred sixty-three billion, five hundred forty-one million, seventy thousand, four hundred fifty-five".