70518789137 has 2 divisors, whose sum is σ = 70518789138. Its totient is φ = 70518789136.

The previous prime is 70518789113. The next prime is 70518789149. The reversal of 70518789137 is 73198781507.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62718190096 + 7800599041 = 250436^2 + 88321^2 .

It is an emirp because it is prime and its reverse (73198781507) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70518789137 - 2¹² = 70518785041 is a prime.

It is not a weakly prime, because it can be changed into another prime (70518789157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35259394568 + 35259394569.

It is an arithmetic number, because the mean of its divisors is an integer number (35259394569).

Almost surely, 2^70518789137 is an apocalyptic number.

It is an amenable number.

70518789137 is a deficient number, since it is larger than the sum of its proper divisors (1).

70518789137 is an equidigital number, since it uses as much as digits as its factorization.

70518789137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2963520, while the sum is 56.

The spelling of 70518789137 in words is "seventy billion, five hundred eighteen million, seven hundred eighty-nine thousand, one hundred thirty-seven".