12537737117 has 2 divisors, whose sum is σ = 12537737118. Its totient is φ = 12537737116.

The previous prime is 12537737101. The next prime is 12537737197. The reversal of 12537737117 is 71173773521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11119913401 + 1417823716 = 105451^2 + 37654^2 .

It is a cyclic number.

It is not a de Polignac number, because 12537737117 - 2⁴ = 12537737101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12537737197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6268868558 + 6268868559.

It is an arithmetic number, because the mean of its divisors is an integer number (6268868559).

Almost surely, 2^12537737117 is an apocalyptic number.

It is an amenable number.

12537737117 is a deficient number, since it is larger than the sum of its proper divisors (1).

12537737117 is an equidigital number, since it uses as much as digits as its factorization.

12537737117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216090, while the sum is 44.

The spelling of 12537737117 in words is "twelve billion, five hundred thirty-seven million, seven hundred thirty-seven thousand, one hundred seventeen".