137108805471997 has 2 divisors, whose sum is σ = 137108805471998. Its totient is φ = 137108805471996.

The previous prime is 137108805471943. The next prime is 137108805472003. The reversal of 137108805471997 is 799174508801731.

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., 86893923099481 + 50214882372516 = 9321691^2 + 7086246^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137108805471997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137108805471497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68554402735998 + 68554402735999.

It is an arithmetic number, because the mean of its divisors is an integer number (68554402735999).

Almost surely, 2^{137108805471997} is an apocalyptic number.

It is an amenable number.

137108805471997 is a deficient number, since it is larger than the sum of its proper divisors (1).

137108805471997 is an equidigital number, since it uses as much as digits as its factorization.

137108805471997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 106686720, while the sum is 70.

The spelling of 137108805471997 in words is "one hundred thirty-seven trillion, one hundred eight billion, eight hundred five million, four hundred seventy-one thousand, nine hundred ninety-seven".