63154022721 has 16 divisors (see below), whose sum is σ = 89164680768. Its totient is φ = 39623360000.

The previous prime is 63154022719. The next prime is 63154022749. The reversal of 63154022721 is 12722045136.

It is a cyclic number.

It is not a de Polignac number, because 63154022721 - 2¹ = 63154022719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63154022621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 936466 + ... + 1001636.

It is an arithmetic number, because the mean of its divisors is an integer number (5572792548).

Almost surely, 2^63154022721 is an apocalyptic number.

It is an amenable number.

63154022721 is a deficient number, since it is larger than the sum of its proper divisors (26010658047).

63154022721 is a wasteful number, since it uses less digits than its factorization.

63154022721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84192.

The product of its (nonzero) digits is 20160, while the sum is 33.

Adding to 63154022721 its reverse (12722045136), we get a palindrome (75876067857).

The spelling of 63154022721 in words is "sixty-three billion, one hundred fifty-four million, twenty-two thousand, seven hundred twenty-one".