21412077523 has 2 divisors, whose sum is σ = 21412077524. Its totient is φ = 21412077522.

The previous prime is 21412077503. The next prime is 21412077601. The reversal of 21412077523 is 32577021412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21412077523 - 2¹³ = 21412069331 is a prime.

It is not a weakly prime, because it can be changed into another prime (21412077503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10706038761 + 10706038762.

It is an arithmetic number, because the mean of its divisors is an integer number (10706038762).

Almost surely, 2^21412077523 is an apocalyptic number.

21412077523 is a deficient number, since it is larger than the sum of its proper divisors (1).

21412077523 is an equidigital number, since it uses as much as digits as its factorization.

21412077523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 34.

Adding to 21412077523 its reverse (32577021412), we get a palindrome (53989098935).

The spelling of 21412077523 in words is "twenty-one billion, four hundred twelve million, seventy-seven thousand, five hundred twenty-three".