137158772209 has 2 divisors, whose sum is σ = 137158772210. Its totient is φ = 137158772208.

The previous prime is 137158772189. The next prime is 137158772237. The reversal of 137158772209 is 902277851731.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121053893184 + 16104879025 = 347928^2 + 126905^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137158772209 is a prime.

It is not a weakly prime, because it can be changed into another prime (137158772809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68579386104 + 68579386105.

It is an arithmetic number, because the mean of its divisors is an integer number (68579386105).

Almost surely, 2^137158772209 is an apocalyptic number.

It is an amenable number.

137158772209 is a deficient number, since it is larger than the sum of its proper divisors (1).

137158772209 is an equidigital number, since it uses as much as digits as its factorization.

137158772209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 52.

The spelling of 137158772209 in words is "one hundred thirty-seven billion, one hundred fifty-eight million, seven hundred seventy-two thousand, two hundred nine".