137321331887 has 2 divisors, whose sum is σ = 137321331888. Its totient is φ = 137321331886.

The previous prime is 137321331869. The next prime is 137321331911. The reversal of 137321331887 is 788133123731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 137321331887 - 2¹⁰ = 137321330863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137321333887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68660665943 + 68660665944.

It is an arithmetic number, because the mean of its divisors is an integer number (68660665944).

Almost surely, 2^137321331887 is an apocalyptic number.

137321331887 is a deficient number, since it is larger than the sum of its proper divisors (1).

137321331887 is an equidigital number, since it uses as much as digits as its factorization.

137321331887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 47.

The spelling of 137321331887 in words is "one hundred thirty-seven billion, three hundred twenty-one million, three hundred thirty-one thousand, eight hundred eighty-seven".