63544462121 has 16 divisors (see below), whose sum is σ = 75137932800. Its totient is φ = 52580488128.

The previous prime is 63544462103. The next prime is 63544462133. The reversal of 63544462121 is 12126444536.

It is not a de Polignac number, because 63544462121 - 2¹⁸ = 63544199977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63544462141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1569296 + ... + 1609278.

It is an arithmetic number, because the mean of its divisors is an integer number (4696120800).

Almost surely, 2^63544462121 is an apocalyptic number.

It is an amenable number.

63544462121 is a deficient number, since it is larger than the sum of its proper divisors (11593470679).

63544462121 is a wasteful number, since it uses less digits than its factorization.

63544462121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47848.

The product of its digits is 138240, while the sum is 38.

The spelling of 63544462121 in words is "sixty-three billion, five hundred forty-four million, four hundred sixty-two thousand, one hundred twenty-one".