663134447457 has 32 divisors (see below), whose sum is σ = 992307680000. Its totient is φ = 437643824256.

The previous prime is 663134447419. The next prime is 663134447497. The reversal of 663134447457 is 754744431366.

663134447457 is a `hidden beast` number, since 6 + 63 + 134 + 447 + 4 + 5 + 7 = 666.

663134447457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 663134447457 - 2²² = 663130253153 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663134447497) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8171919 + ... + 8252667.

It is an arithmetic number, because the mean of its divisors is an integer number (31009615000).

Almost surely, 2^663134447457 is an apocalyptic number.

It is an amenable number.

663134447457 is a deficient number, since it is larger than the sum of its proper divisors (329173232543).

663134447457 is a wasteful number, since it uses less digits than its factorization.

663134447457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83814 (or 83808 counting only the distinct ones).

The product of its digits is 20321280, while the sum is 54.

The spelling of 663134447457 in words is "six hundred sixty-three billion, one hundred thirty-four million, four hundred forty-seven thousand, four hundred fifty-seven".