23507218302149 has 2 divisors, whose sum is σ = 23507218302150. Its totient is φ = 23507218302148.

The previous prime is 23507218302109. The next prime is 23507218302287. The reversal of 23507218302149 is 94120381270532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15974290336225 + 7532927965924 = 3996785^2 + 2744618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23507218302149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23507218302109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11753609151074 + 11753609151075.

It is an arithmetic number, because the mean of its divisors is an integer number (11753609151075).

Almost surely, 2^{23507218302149} is an apocalyptic number.

It is an amenable number.

23507218302149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23507218302149 is an equidigital number, since it uses as much as digits as its factorization.

23507218302149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 23507218302149 in words is "twenty-three trillion, five hundred seven billion, two hundred eighteen million, three hundred two thousand, one hundred forty-nine".