21431420132626 has 24 divisors (see below), whose sum is σ = 37953785162736. Its totient is φ = 9047806364520.

The previous prime is 21431420132561. The next prime is 21431420132627. The reversal of 21431420132626 is 62623102413412.

It is a super-2 number, since 2×21431420132626² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21431420132627) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1631993140 + ... + 1632006271.

It is an arithmetic number, because the mean of its divisors is an integer number (1581407715114).

Almost surely, 2^{21431420132626} is an apocalyptic number.

21431420132626 is a deficient number, since it is larger than the sum of its proper divisors (16522365030110).

21431420132626 is a wasteful number, since it uses less digits than its factorization.

21431420132626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263999494 (or 3263999487 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The spelling of 21431420132626 in words is "twenty-one trillion, four hundred thirty-one billion, four hundred twenty million, one hundred thirty-two thousand, six hundred twenty-six".