21513014135535 has 32 divisors (see below), whose sum is σ = 37070166228480. Its totient is φ = 10590568622208.

The previous prime is 21513014135521. The next prime is 21513014135573. The reversal of 21513014135535 is 53553141031512.

It is not a de Polignac number, because 21513014135535 - 2¹⁴ = 21513014119151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 21513014135493 and 21513014135502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2223102 + ... + 6925908.

It is an arithmetic number, because the mean of its divisors is an integer number (1158442694640).

Almost surely, 2^{21513014135535} is an apocalyptic number.

21513014135535 is a deficient number, since it is larger than the sum of its proper divisors (15557152092945).

21513014135535 is a wasteful number, since it uses less digits than its factorization.

21513014135535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4726287.

The product of its (nonzero) digits is 135000, while the sum is 39.

The spelling of 21513014135535 in words is "twenty-one trillion, five hundred thirteen billion, fourteen million, one hundred thirty-five thousand, five hundred thirty-five".