43623105415573 has 2 divisors, whose sum is σ = 43623105415574. Its totient is φ = 43623105415572.

The previous prime is 43623105415499. The next prime is 43623105415649. The reversal of 43623105415573 is 37551450132634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28309986828369 + 15313118587204 = 5320713^2 + 3913198^2 .

It is a cyclic number.

It is not a de Polignac number, because 43623105415573 - 2²⁹ = 43622568544661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43623105445573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21811552707786 + 21811552707787.

It is an arithmetic number, because the mean of its divisors is an integer number (21811552707787).

Almost surely, 2^{43623105415573} is an apocalyptic number.

It is an amenable number.

43623105415573 is a deficient number, since it is larger than the sum of its proper divisors (1).

43623105415573 is an equidigital number, since it uses as much as digits as its factorization.

43623105415573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536000, while the sum is 49.

The spelling of 43623105415573 in words is "forty-three trillion, six hundred twenty-three billion, one hundred five million, four hundred fifteen thousand, five hundred seventy-three".