23420730047573 has 2 divisors, whose sum is σ = 23420730047574. Its totient is φ = 23420730047572.

The previous prime is 23420730047543. The next prime is 23420730047581. The reversal of 23420730047573 is 37574003702432.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12863936276689 + 10556793770884 = 3586633^2 + 3249122^2 .

It is a cyclic number.

It is not a de Polignac number, because 23420730047573 - 2³² = 23416435080277 is a prime.

It is a super-2 number, since 2×23420730047573² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23420730047543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710365023786 + 11710365023787.

It is an arithmetic number, because the mean of its divisors is an integer number (11710365023787).

Almost surely, 2^{23420730047573} is an apocalyptic number.

It is an amenable number.

23420730047573 is a deficient number, since it is larger than the sum of its proper divisors (1).

23420730047573 is an equidigital number, since it uses as much as digits as its factorization.

23420730047573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 47.

The spelling of 23420730047573 in words is "twenty-three trillion, four hundred twenty billion, seven hundred thirty million, forty-seven thousand, five hundred seventy-three".