137638750027 has 4 divisors (see below), whose sum is σ = 137645048520. Its totient is φ = 137632451536.

The previous prime is 137638750013. The next prime is 137638750043. The reversal of 137638750027 is 720057836731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720057836731 = 1187 ⋅606619913.

It is a cyclic number.

It is not a de Polignac number, because 137638750027 - 2²³ = 137630361419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (137638750057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3116353 + ... + 3160210.

It is an arithmetic number, because the mean of its divisors is an integer number (34411262130).

Almost surely, 2^137638750027 is an apocalyptic number.

137638750027 is a deficient number, since it is larger than the sum of its proper divisors (6298493).

137638750027 is an equidigital number, since it uses as much as digits as its factorization.

137638750027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6298492.

The product of its (nonzero) digits is 1481760, while the sum is 49.

The spelling of 137638750027 in words is "one hundred thirty-seven billion, six hundred thirty-eight million, seven hundred fifty thousand, twenty-seven".