63531145066444 has 24 divisors (see below), whose sum is σ = 121288269791808. Its totient is φ = 28877426949840.

The previous prime is 63531145066427. The next prime is 63531145066531. The reversal of 63531145066444 is 44466054113536.

It is a junction number, because it is equal to n+sod(n) for n = 63531145066391 and 63531145066400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5632734 + ... + 12601189.

It is an arithmetic number, because the mean of its divisors is an integer number (5053677907992).

Almost surely, 2^{63531145066444} is an apocalyptic number.

It is an amenable number.

63531145066444 is a deficient number, since it is larger than the sum of its proper divisors (57757124725364).

63531145066444 is a wasteful number, since it uses less digits than its factorization.

63531145066444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18313125 (or 18313123 counting only the distinct ones).

The product of its (nonzero) digits is 12441600, while the sum is 52.

The spelling of 63531145066444 in words is "sixty-three trillion, five hundred thirty-one billion, one hundred forty-five million, sixty-six thousand, four hundred forty-four".