137371197251 has 2 divisors, whose sum is σ = 137371197252. Its totient is φ = 137371197250.

The previous prime is 137371197239. The next prime is 137371197281. The reversal of 137371197251 is 152791173731.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137371197251 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 137371197196 and 137371197205.

It is not a weakly prime, because it can be changed into another prime (137371197281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68685598625 + 68685598626.

It is an arithmetic number, because the mean of its divisors is an integer number (68685598626).

Almost surely, 2^137371197251 is an apocalyptic number.

137371197251 is a deficient number, since it is larger than the sum of its proper divisors (1).

137371197251 is an equidigital number, since it uses as much as digits as its factorization.

137371197251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 277830, while the sum is 47.

The spelling of 137371197251 in words is "one hundred thirty-seven billion, three hundred seventy-one million, one hundred ninety-seven thousand, two hundred fifty-one".