21413250153389 has 2 divisors, whose sum is σ = 21413250153390. Its totient is φ = 21413250153388.

The previous prime is 21413250153329. The next prime is 21413250153473. The reversal of 21413250153389 is 98335105231412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17837149794025 + 3576100359364 = 4223405^2 + 1891058^2 .

It is a cyclic number.

It is not a de Polignac number, because 21413250153389 - 2⁸ = 21413250153133 is a prime.

It is a super-2 number, since 2×21413250153389² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21413250153329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706625076694 + 10706625076695.

It is an arithmetic number, because the mean of its divisors is an integer number (10706625076695).

Almost surely, 2^{21413250153389} is an apocalyptic number.

It is an amenable number.

21413250153389 is a deficient number, since it is larger than the sum of its proper divisors (1).

21413250153389 is an equidigital number, since it uses as much as digits as its factorization.

21413250153389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 21413250153389 in words is "twenty-one trillion, four hundred thirteen billion, two hundred fifty million, one hundred fifty-three thousand, three hundred eighty-nine".