21151301305435 has 48 divisors (see below), whose sum is σ = 29558188638720. Its totient is φ = 14487694603200.

The previous prime is 21151301305423. The next prime is 21151301305457. The reversal of 21151301305435 is 53450310315112.

It is not a de Polignac number, because 21151301305435 - 2⁷ = 21151301305307 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21151301305435.

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 47 ways as a sum of consecutive naturals, for example, 1205124910 + ... + 1205142460.

It is an arithmetic number, because the mean of its divisors is an integer number (615795596640).

Almost surely, 2^{21151301305435} is an apocalyptic number.

21151301305435 is a deficient number, since it is larger than the sum of its proper divisors (8406887333285).

21151301305435 is a wasteful number, since it uses less digits than its factorization.

21151301305435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22736 (or 22729 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 21151301305435 in words is "twenty-one trillion, one hundred fifty-one billion, three hundred one million, three hundred five thousand, four hundred thirty-five".