21214026555432 has 64 divisors (see below), whose sum is σ = 54797089267200. Its totient is φ = 6836832587520.

The previous prime is 21214026555409. The next prime is 21214026555437. The reversal of 21214026555432 is 23455562041212.

It is a super-3 number, since 3×21214026555432³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21214026555437) 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, 12541183 + ... + 14131854.

It is an arithmetic number, because the mean of its divisors is an integer number (856204519800).

Almost surely, 2^{21214026555432} is an apocalyptic number.

It is an amenable number.

21214026555432 is an abundant number, since it is smaller than the sum of its proper divisors (33583062711768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214026555432 is a wasteful number, since it uses less digits than its factorization.

21214026555432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26674146 (or 26674142 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 21214026555432 its reverse (23455562041212), we get a palindrome (44669588596644).

The spelling of 21214026555432 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, five hundred fifty-five thousand, four hundred thirty-two".