137327255981 has 2 divisors, whose sum is σ = 137327255982. Its totient is φ = 137327255980.

The previous prime is 137327255927. The next prime is 137327256013. The reversal of 137327255981 is 189552723731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126483366025 + 10843889956 = 355645^2 + 104134^2 .

It is a cyclic number.

It is not a de Polignac number, because 137327255981 - 2¹⁴ = 137327239597 is a prime.

It is a super-2 number, since 2×137327255981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137327215981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68663627990 + 68663627991.

It is an arithmetic number, because the mean of its divisors is an integer number (68663627991).

Almost surely, 2^137327255981 is an apocalyptic number.

It is an amenable number.

137327255981 is a deficient number, since it is larger than the sum of its proper divisors (1).

137327255981 is an equidigital number, since it uses as much as digits as its factorization.

137327255981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3175200, while the sum is 53.

The spelling of 137327255981 in words is "one hundred thirty-seven billion, three hundred twenty-seven million, two hundred fifty-five thousand, nine hundred eighty-one".