63321154421 has 16 divisors (see below), whose sum is σ = 73049568768. Its totient is φ = 53764854000.

The previous prime is 63321154397. The next prime is 63321154427. The reversal of 63321154421 is 12445112336.

It is a cyclic number.

It is not a de Polignac number, because 63321154421 - 2²² = 63316960117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63321154427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 454946 + ... + 577596.

It is an arithmetic number, because the mean of its divisors is an integer number (4565598048).

Almost surely, 2^63321154421 is an apocalyptic number.

It is an amenable number.

63321154421 is a deficient number, since it is larger than the sum of its proper divisors (9728414347).

63321154421 is a wasteful number, since it uses less digits than its factorization.

63321154421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123352.

The product of its digits is 17280, while the sum is 32.

Adding to 63321154421 its reverse (12445112336), we get a palindrome (75766266757).

The spelling of 63321154421 in words is "sixty-three billion, three hundred twenty-one million, one hundred fifty-four thousand, four hundred twenty-one".