21634320541035 has 16 divisors (see below), whose sum is σ = 34619395106304. Its totient is φ = 11536810208352.

The previous prime is 21634320540997. The next prime is 21634320541121. The reversal of 21634320541035 is 53014502343612.

It is not a de Polignac number, because 21634320541035 - 2⁶ = 21634320540971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21634320540984 and 21634320541002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93260307 + ... + 93491996.

It is an arithmetic number, because the mean of its divisors is an integer number (2163712194144).

Almost surely, 2^{21634320541035} is an apocalyptic number.

21634320541035 is a deficient number, since it is larger than the sum of its proper divisors (12985074565269).

21634320541035 is a wasteful number, since it uses less digits than its factorization.

21634320541035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186760034.

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 21634320541035 its reverse (53014502343612), we get a palindrome (74648822884647).

The spelling of 21634320541035 in words is "twenty-one trillion, six hundred thirty-four billion, three hundred twenty million, five hundred forty-one thousand, thirty-five".