63432215421 has 8 divisors (see below), whose sum is σ = 84579292224. Its totient is φ = 42286641120.

The previous prime is 63432215389. The next prime is 63432215459. The reversal of 63432215421 is 12451223436.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63432215421 - 2⁵ = 63432215389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63432215471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273120 + ... + 448841.

It is an arithmetic number, because the mean of its divisors is an integer number (10572411528).

Almost surely, 2^63432215421 is an apocalyptic number.

It is an amenable number.

63432215421 is a deficient number, since it is larger than the sum of its proper divisors (21147076803).

63432215421 is a wasteful number, since it uses less digits than its factorization.

63432215421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751251.

The product of its digits is 34560, while the sum is 33.

Adding to 63432215421 its reverse (12451223436), we get a palindrome (75883438857).

The spelling of 63432215421 in words is "sixty-three billion, four hundred thirty-two million, two hundred fifteen thousand, four hundred twenty-one".