113421205487 has 2 divisors, whose sum is σ = 113421205488. Its totient is φ = 113421205486.

The previous prime is 113421205483. The next prime is 113421205543. The reversal of 113421205487 is 784502124311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 113421205487 - 2² = 113421205483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113421205487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113421205483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56710602743 + 56710602744.

It is an arithmetic number, because the mean of its divisors is an integer number (56710602744).

Almost surely, 2^113421205487 is an apocalyptic number.

113421205487 is a deficient number, since it is larger than the sum of its proper divisors (1).

113421205487 is an equidigital number, since it uses as much as digits as its factorization.

113421205487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

Adding to 113421205487 its reverse (784502124311), we get a palindrome (897923329798).

The spelling of 113421205487 in words is "one hundred thirteen billion, four hundred twenty-one million, two hundred five thousand, four hundred eighty-seven".