23438374777 has 2 divisors, whose sum is σ = 23438374778. Its totient is φ = 23438374776.

The previous prime is 23438374741. The next prime is 23438374807. The reversal of 23438374777 is 77747383432.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20044613241 + 3393761536 = 141579^2 + 58256^2 .

It is a cyclic number.

It is not a de Polignac number, because 23438374777 - 2¹⁵ = 23438342009 is a prime.

It is not a weakly prime, because it can be changed into another prime (23438374277) 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, 11719187388 + 11719187389.

It is an arithmetic number, because the mean of its divisors is an integer number (11719187389).

Almost surely, 2^23438374777 is an apocalyptic number.

It is an amenable number.

23438374777 is a deficient number, since it is larger than the sum of its proper divisors (1).

23438374777 is an equidigital number, since it uses as much as digits as its factorization.

23438374777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16595712, while the sum is 55.

The spelling of 23438374777 in words is "twenty-three billion, four hundred thirty-eight million, three hundred seventy-four thousand, seven hundred seventy-seven".