23302457621 has 2 divisors, whose sum is σ = 23302457622. Its totient is φ = 23302457620.

The previous prime is 23302457597. The next prime is 23302457671. The reversal of 23302457621 is 12675420332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14711021521 + 8591436100 = 121289^2 + 92690^2 .

It is a cyclic number.

It is not a de Polignac number, because 23302457621 - 2⁶ = 23302457557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23302457671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11651228810 + 11651228811.

It is an arithmetic number, because the mean of its divisors is an integer number (11651228811).

Almost surely, 2^23302457621 is an apocalyptic number.

It is an amenable number.

23302457621 is a deficient number, since it is larger than the sum of its proper divisors (1).

23302457621 is an equidigital number, since it uses as much as digits as its factorization.

23302457621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 60480, while the sum is 35.

Adding to 23302457621 its reverse (12675420332), we get a palindrome (35977877953).

The spelling of 23302457621 in words is "twenty-three billion, three hundred two million, four hundred fifty-seven thousand, six hundred twenty-one".