138015520151 has 2 divisors, whose sum is σ = 138015520152. Its totient is φ = 138015520150.

The previous prime is 138015520121. The next prime is 138015520177. The reversal of 138015520151 is 151025510831.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138015520151 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138015520121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69007760075 + 69007760076.

It is an arithmetic number, because the mean of its divisors is an integer number (69007760076).

Almost surely, 2^138015520151 is an apocalyptic number.

138015520151 is a deficient number, since it is larger than the sum of its proper divisors (1).

138015520151 is an equidigital number, since it uses as much as digits as its factorization.

138015520151 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6000, while the sum is 32.

The spelling of 138015520151 in words is "one hundred thirty-eight billion, fifteen million, five hundred twenty thousand, one hundred fifty-one".