21053613490395 has 16 divisors (see below), whose sum is σ = 33685843479552. Its totient is φ = 11228573229920.

The previous prime is 21053613490379. The next prime is 21053613490493. The reversal of 21053613490395 is 59309431635012.

It is not a de Polignac number, because 21053613490395 - 2⁴ = 21053613490379 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 10806460 + ... + 12605030.

It is an arithmetic number, because the mean of its divisors is an integer number (2105365217472).

Almost surely, 2^{21053613490395} is an apocalyptic number.

21053613490395 is a deficient number, since it is larger than the sum of its proper divisors (12632229989157).

21053613490395 is a wasteful number, since it uses less digits than its factorization.

21053613490395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578962.

The product of its (nonzero) digits is 2624400, while the sum is 51.

The spelling of 21053613490395 in words is "twenty-one trillion, fifty-three billion, six hundred thirteen million, four hundred ninety thousand, three hundred ninety-five".