137233661387 has 2 divisors, whose sum is σ = 137233661388. Its totient is φ = 137233661386.

The previous prime is 137233661363. The next prime is 137233661429. The reversal of 137233661387 is 783166332731.

It is a weak prime.

It is an emirp because it is prime and its reverse (783166332731) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-137233661387 is a prime.

It is not a weakly prime, because it can be changed into another prime (137233661347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68616830693 + 68616830694.

It is an arithmetic number, because the mean of its divisors is an integer number (68616830694).

Almost surely, 2^137233661387 is an apocalyptic number.

137233661387 is a deficient number, since it is larger than the sum of its proper divisors (1).

137233661387 is an equidigital number, since it uses as much as digits as its factorization.

137233661387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 50.

The spelling of 137233661387 in words is "one hundred thirty-seven billion, two hundred thirty-three million, six hundred sixty-one thousand, three hundred eighty-seven".