21436026303755 has 32 divisors (see below), whose sum is σ = 29513167563264. Its totient is φ = 14641434982656.

The previous prime is 21436026303719. The next prime is 21436026303761. The reversal of 21436026303755 is 55730362063412.

It is a cyclic number.

It is not a de Polignac number, because 21436026303755 - 2¹⁶ = 21436026238219 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25507904 + ... + 26334866.

It is an arithmetic number, because the mean of its divisors is an integer number (922286486352).

Almost surely, 2^{21436026303755} is an apocalyptic number.

21436026303755 is a deficient number, since it is larger than the sum of its proper divisors (8077141259509).

21436026303755 is a wasteful number, since it uses less digits than its factorization.

21436026303755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829875.

The product of its (nonzero) digits is 2721600, while the sum is 47.

The spelling of 21436026303755 in words is "twenty-one trillion, four hundred thirty-six billion, twenty-six million, three hundred three thousand, seven hundred fifty-five".