21161014513534 has 8 divisors (see below), whose sum is σ = 36276024880368. Its totient is φ = 9069006220080.

The previous prime is 21161014513453. The next prime is 21161014513603. The reversal of 21161014513534 is 43531541016112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21161014513493 and 21161014513502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755750518327 + ... + 755750518354.

It is an arithmetic number, because the mean of its divisors is an integer number (4534503110046).

Almost surely, 2^{21161014513534} is an apocalyptic number.

21161014513534 is a deficient number, since it is larger than the sum of its proper divisors (15115010366834).

21161014513534 is a wasteful number, since it uses less digits than its factorization.

21161014513534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511501036690.

The product of its (nonzero) digits is 43200, while the sum is 37.

Adding to 21161014513534 its reverse (43531541016112), we get a palindrome (64692555529646).

The spelling of 21161014513534 in words is "twenty-one trillion, one hundred sixty-one billion, fourteen million, five hundred thirteen thousand, five hundred thirty-four".