137659513381 has 8 divisors (see below), whose sum is σ = 148273997144. Its totient is φ = 127048642560.

The previous prime is 137659513367. The next prime is 137659513391. The reversal of 137659513381 is 183315956731.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3018953025 + 134640560356 = 54945^2 + 366934^2 .

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 137659513381 - 2⁵ = 137659513349 is a prime.

It is a super-2 number, since 2×137659513381² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137659513331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823836 + ... + 976741.

It is an arithmetic number, because the mean of its divisors is an integer number (18534249643).

Almost surely, 2^137659513381 is an apocalyptic number.

It is an amenable number.

137659513381 is a deficient number, since it is larger than the sum of its proper divisors (10614483763).

137659513381 is a wasteful number, since it uses less digits than its factorization.

137659513381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806471.

The product of its digits is 2041200, while the sum is 52.

The spelling of 137659513381 in words is "one hundred thirty-seven billion, six hundred fifty-nine million, five hundred thirteen thousand, three hundred eighty-one".