21653050413 has 16 divisors (see below), whose sum is σ = 29421501696. Its totient is φ = 14160095040.

The previous prime is 21653050387. The next prime is 21653050429. The reversal of 21653050413 is 31405035612.

It is not a de Polignac number, because 21653050413 - 2¹⁰ = 21653049389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21653050493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988803 + ... + 1010463.

It is an arithmetic number, because the mean of its divisors is an integer number (1838843856).

Almost surely, 2^21653050413 is an apocalyptic number.

It is an amenable number.

21653050413 is a deficient number, since it is larger than the sum of its proper divisors (7768451283).

21653050413 is a wasteful number, since it uses less digits than its factorization.

21653050413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28004.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 21653050413 in words is "twenty-one billion, six hundred fifty-three million, fifty thousand, four hundred thirteen".