137851775233 has 2 divisors, whose sum is σ = 137851775234. Its totient is φ = 137851775232.

The previous prime is 137851775221. The next prime is 137851775293. The reversal of 137851775233 is 332577158731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136244406769 + 1607368464 = 369113^2 + 40092^2 .

It is a cyclic number.

It is not a de Polignac number, because 137851775233 - 2⁹ = 137851774721 is a prime.

It is a super-4 number, since 4×137851775233⁴ (a number of 46 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (137851775203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68925887616 + 68925887617.

It is an arithmetic number, because the mean of its divisors is an integer number (68925887617).

Almost surely, 2^137851775233 is an apocalyptic number.

It is an amenable number.

137851775233 is a deficient number, since it is larger than the sum of its proper divisors (1).

137851775233 is an equidigital number, since it uses as much as digits as its factorization.

137851775233 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3704400, while the sum is 52.

The spelling of 137851775233 in words is "one hundred thirty-seven billion, eight hundred fifty-one million, seven hundred seventy-five thousand, two hundred thirty-three".