1623545342423 has 2 divisors, whose sum is σ = 1623545342424. Its totient is φ = 1623545342422.

The previous prime is 1623545342407. The next prime is 1623545342467. The reversal of 1623545342423 is 3242435453261.

It is an a-pointer prime, because the next prime (1623545342467) can be obtained adding 1623545342423 to its sum of digits (44).

It is a weak prime.

It is an emirp because it is prime and its reverse (3242435453261) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1623545342423 - 2⁴ = 1623545342407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623545342483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811772671211 + 811772671212.

It is an arithmetic number, because the mean of its divisors is an integer number (811772671212).

Almost surely, 2^{1623545342423} is an apocalyptic number.

1623545342423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623545342423 is an equidigital number, since it uses as much as digits as its factorization.

1623545342423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2073600, while the sum is 44.

The spelling of 1623545342423 in words is "one trillion, six hundred twenty-three billion, five hundred forty-five million, three hundred forty-two thousand, four hundred twenty-three".