137643531336965 has 8 divisors (see below), whose sum is σ = 165173104844280. Its totient is φ = 110114246909632.

The previous prime is 137643531336923. The next prime is 137643531336979. The reversal of 137643531336965 is 569633135346731.

It is a Cunningham number, because it is equal to 11732158²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 1 + 137643531336964 = 1^2 + 11732158^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 137643531336965 - 2⁴⁰ = 136544019709189 is a prime.

It is a super-2 number, since 2×137643531336965² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71221094 + ... + 73128183.

It is an arithmetic number, because the mean of its divisors is an integer number (20646638105535).

Almost surely, 2^{137643531336965} is an apocalyptic number.

It is an amenable number.

137643531336965 is a deficient number, since it is larger than the sum of its proper divisors (27529573507315).

137643531336965 is a wasteful number, since it uses less digits than its factorization.

137643531336965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144539991.

The product of its digits is 330674400, while the sum is 65.

The spelling of 137643531336965 in words is "one hundred thirty-seven trillion, six hundred forty-three billion, five hundred thirty-one million, three hundred thirty-six thousand, nine hundred sixty-five".