137712617857 has 4 divisors (see below), whose sum is σ = 137806237696. Its totient is φ = 137618998020.

The previous prime is 137712617851. The next prime is 137712617909. The reversal of 137712617857 is 758716217731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 137712617857 - 2³ = 137712617849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 137712617798 and 137712617807.

It is not an unprimeable number, because it can be changed into a prime (137712617851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46807713 + ... + 46810654.

It is an arithmetic number, because the mean of its divisors is an integer number (34451559424).

Almost surely, 2^137712617857 is an apocalyptic number.

It is an amenable number.

137712617857 is a deficient number, since it is larger than the sum of its proper divisors (93619839).

137712617857 is an equidigital number, since it uses as much as digits as its factorization.

137712617857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93619838.

The product of its digits is 3457440, while the sum is 55.

The spelling of 137712617857 in words is "one hundred thirty-seven billion, seven hundred twelve million, six hundred seventeen thousand, eight hundred fifty-seven".