23443370477 has 2 divisors, whose sum is σ = 23443370478. Its totient is φ = 23443370476.

The previous prime is 23443370449. The next prime is 23443370521. The reversal of 23443370477 is 77407334432.

It is a happy number.

It is an a-pointer prime, because the next prime (23443370521) can be obtained adding 23443370477 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23231551561 + 211818916 = 152419^2 + 14554^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23443370477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23443370177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11721685238 + 11721685239.

It is an arithmetic number, because the mean of its divisors is an integer number (11721685239).

Almost surely, 2^23443370477 is an apocalyptic number.

It is an amenable number.

23443370477 is a deficient number, since it is larger than the sum of its proper divisors (1).

23443370477 is an equidigital number, since it uses as much as digits as its factorization.

23443370477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 44.

The spelling of 23443370477 in words is "twenty-three billion, four hundred forty-three million, three hundred seventy thousand, four hundred seventy-seven".