84513388331623 has 2 divisors, whose sum is σ = 84513388331624. Its totient is φ = 84513388331622.

The previous prime is 84513388331509. The next prime is 84513388331629. The reversal of 84513388331623 is 32613388331548.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84513388331623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84513388331629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42256694165811 + 42256694165812.

It is an arithmetic number, because the mean of its divisors is an integer number (42256694165812).

Almost surely, 2^{84513388331623} is an apocalyptic number.

84513388331623 is a deficient number, since it is larger than the sum of its proper divisors (1).

84513388331623 is an equidigital number, since it uses as much as digits as its factorization.

84513388331623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29859840, while the sum is 58.

The spelling of 84513388331623 in words is "eighty-four trillion, five hundred thirteen billion, three hundred eighty-eight million, three hundred thirty-one thousand, six hundred twenty-three".