21532132435 has 16 divisors (see below), whose sum is σ = 28190534400. Its totient is φ = 15658057440.

The previous prime is 21532132421. The next prime is 21532132439. The reversal of 21532132435 is 53423123512.

It is not a de Polignac number, because 21532132435 - 2⁵ = 21532132403 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21532132397 and 21532132406.

It is not an unprimeable number, because it can be changed into a prime (21532132439) 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, 760666 + ... + 788464.

It is an arithmetic number, because the mean of its divisors is an integer number (1761908400).

Almost surely, 2^21532132435 is an apocalyptic number.

21532132435 is a deficient number, since it is larger than the sum of its proper divisors (6658401965).

21532132435 is a wasteful number, since it uses less digits than its factorization.

21532132435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41898.

The product of its digits is 21600, while the sum is 31.

Adding to 21532132435 its reverse (53423123512), we get a palindrome (74955255947).

The spelling of 21532132435 in words is "twenty-one billion, five hundred thirty-two million, one hundred thirty-two thousand, four hundred thirty-five".