137681108027 has 4 divisors (see below), whose sum is σ = 137683639080. Its totient is φ = 137678576976.

The previous prime is 137681108023. The next prime is 137681108029. The reversal of 137681108027 is 720801186731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720801186731 = 38197 ⋅18870623.

It is a cyclic number.

It is not a de Polignac number, because 137681108027 - 2² = 137681108023 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137681108023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1182098 + ... + 1293335.

It is an arithmetic number, because the mean of its divisors is an integer number (34420909770).

Almost surely, 2^137681108027 is an apocalyptic number.

137681108027 is a deficient number, since it is larger than the sum of its proper divisors (2531053).

137681108027 is an equidigital number, since it uses as much as digits as its factorization.

137681108027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2531052.

The product of its (nonzero) digits is 112896, while the sum is 44.

The spelling of 137681108027 in words is "one hundred thirty-seven billion, six hundred eighty-one million, one hundred eight thousand, twenty-seven".