21432429579063 has 16 divisors (see below), whose sum is σ = 28677650155776. Its totient is φ = 14237831858880.

The previous prime is 21432429579047. The next prime is 21432429579083. The reversal of 21432429579063 is 36097592423412.

It is not a de Polignac number, because 21432429579063 - 2⁴ = 21432429579047 is a prime.

It is a super-2 number, since 2×21432429579063² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21432429578994 and 21432429579012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21432429579083) 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, 9501333 + ... + 11538638.

It is an arithmetic number, because the mean of its divisors is an integer number (1792353134736).

Almost surely, 2^{21432429579063} is an apocalyptic number.

21432429579063 is a deficient number, since it is larger than the sum of its proper divisors (7245220576713).

21432429579063 is a wasteful number, since it uses less digits than its factorization.

21432429579063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21041174.

The product of its (nonzero) digits is 19595520, while the sum is 57.

The spelling of 21432429579063 in words is "twenty-one trillion, four hundred thirty-two billion, four hundred twenty-nine million, five hundred seventy-nine thousand, sixty-three".