21264021160139 has 2 divisors, whose sum is σ = 21264021160140. Its totient is φ = 21264021160138.

The previous prime is 21264021160099. The next prime is 21264021160169. The reversal of 21264021160139 is 93106112046212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21264021160139 - 2²⁰ = 21264020111563 is a prime.

It is not a weakly prime, because it can be changed into another prime (21264021160169) by changing a digit.

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 as a sum of consecutive naturals, namely, 10632010580069 + 10632010580070.

It is an arithmetic number, because the mean of its divisors is an integer number (10632010580070).

Almost surely, 2^{21264021160139} is an apocalyptic number.

21264021160139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21264021160139 is an equidigital number, since it uses as much as digits as its factorization.

21264021160139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 21264021160139 in words is "twenty-one trillion, two hundred sixty-four billion, twenty-one million, one hundred sixty thousand, one hundred thirty-nine".