137515666949 has 2 divisors, whose sum is σ = 137515666950. Its totient is φ = 137515666948.

The previous prime is 137515666879. The next prime is 137515666993. The reversal of 137515666949 is 949666515731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72927002500 + 64588664449 = 270050^2 + 254143^2 .

It is a cyclic number.

It is not a de Polignac number, because 137515666949 - 2³⁶ = 68796190213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 137515666891 and 137515666900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137515666999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68757833474 + 68757833475.

It is an arithmetic number, because the mean of its divisors is an integer number (68757833475).

Almost surely, 2^137515666949 is an apocalyptic number.

It is an amenable number.

137515666949 is a deficient number, since it is larger than the sum of its proper divisors (1).

137515666949 is an equidigital number, since it uses as much as digits as its factorization.

137515666949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36741600, while the sum is 62.

The spelling of 137515666949 in words is "one hundred thirty-seven billion, five hundred fifteen million, six hundred sixty-six thousand, nine hundred forty-nine".