423915094517 has 2 divisors, whose sum is σ = 423915094518. Its totient is φ = 423915094516.

The previous prime is 423915094513. The next prime is 423915094543. The reversal of 423915094517 is 715490519324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400570004836 + 23345089681 = 632906^2 + 152791^2 .

It is a cyclic number.

It is not a de Polignac number, because 423915094517 - 2² = 423915094513 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423915094513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211957547258 + 211957547259.

It is an arithmetic number, because the mean of its divisors is an integer number (211957547259).

Almost surely, 2^423915094517 is an apocalyptic number.

It is an amenable number.

423915094517 is a deficient number, since it is larger than the sum of its proper divisors (1).

423915094517 is an equidigital number, since it uses as much as digits as its factorization.

423915094517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1360800, while the sum is 50.

The spelling of 423915094517 in words is "four hundred twenty-three billion, nine hundred fifteen million, ninety-four thousand, five hundred seventeen".