21352024139 has 2 divisors, whose sum is σ = 21352024140. Its totient is φ = 21352024138.

The previous prime is 21352024081. The next prime is 21352024151. The reversal of 21352024139 is 93142025312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21352024139 - 2³² = 17057056843 is a prime.

It is not a weakly prime, because it can be changed into another prime (21352024159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676012069 + 10676012070.

It is an arithmetic number, because the mean of its divisors is an integer number (10676012070).

Almost surely, 2^21352024139 is an apocalyptic number.

21352024139 is a deficient number, since it is larger than the sum of its proper divisors (1).

21352024139 is an equidigital number, since it uses as much as digits as its factorization.

21352024139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 21352024139 in words is "twenty-one billion, three hundred fifty-two million, twenty-four thousand, one hundred thirty-nine".