137033333581 has 2 divisors, whose sum is σ = 137033333582. Its totient is φ = 137033333580.

The previous prime is 137033333537. The next prime is 137033333587. The reversal of 137033333581 is 185333330731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104933236356 + 32100097225 = 323934^2 + 179165^2 .

It is an emirp because it is prime and its reverse (185333330731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137033333581 is a prime.

It is a super-2 number, since 2×137033333581² (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 (137033333587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68516666790 + 68516666791.

It is an arithmetic number, because the mean of its divisors is an integer number (68516666791).

Almost surely, 2^137033333581 is an apocalyptic number.

It is an amenable number.

137033333581 is a deficient number, since it is larger than the sum of its proper divisors (1).

137033333581 is an equidigital number, since it uses as much as digits as its factorization.

137033333581 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204120, while the sum is 40.

The spelling of 137033333581 in words is "one hundred thirty-seven billion, thirty-three million, three hundred thirty-three thousand, five hundred eighty-one".