21424614151 has 2 divisors, whose sum is σ = 21424614152. Its totient is φ = 21424614150.

The previous prime is 21424614139. The next prime is 21424614179. The reversal of 21424614151 is 15141642412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21424614151 - 2¹³ = 21424605959 is a prime.

It is a super-4 number, since 4×21424614151⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21424614131) 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 as a sum of consecutive naturals, namely, 10712307075 + 10712307076.

It is an arithmetic number, because the mean of its divisors is an integer number (10712307076).

Almost surely, 2^21424614151 is an apocalyptic number.

21424614151 is a deficient number, since it is larger than the sum of its proper divisors (1).

21424614151 is an equidigital number, since it uses as much as digits as its factorization.

21424614151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 31.

The spelling of 21424614151 in words is "twenty-one billion, four hundred twenty-four million, six hundred fourteen thousand, one hundred fifty-one".