23278183933 has 2 divisors, whose sum is σ = 23278183934. Its totient is φ = 23278183932.

The previous prime is 23278183891. The next prime is 23278183937. The reversal of 23278183933 is 33938187232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21707012889 + 1571171044 = 147333^2 + 39638^2 .

It is a cyclic number.

It is not a de Polignac number, because 23278183933 - 2¹³ = 23278175741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23278183937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11639091966 + 11639091967.

It is an arithmetic number, because the mean of its divisors is an integer number (11639091967).

Almost surely, 2^23278183933 is an apocalyptic number.

It is an amenable number.

23278183933 is a deficient number, since it is larger than the sum of its proper divisors (1).

23278183933 is an equidigital number, since it uses as much as digits as its factorization.

23278183933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The spelling of 23278183933 in words is "twenty-three billion, two hundred seventy-eight million, one hundred eighty-three thousand, nine hundred thirty-three".