138087641613 has 4 divisors (see below), whose sum is σ = 184116855488. Its totient is φ = 92058427740.

The previous prime is 138087641611. The next prime is 138087641639. The reversal of 138087641613 is 316146780831.

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 not a de Polignac number, because 138087641613 - 2¹ = 138087641611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138087641611) 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, 23014606933 + ... + 23014606938.

It is an arithmetic number, because the mean of its divisors is an integer number (46029213872).

Almost surely, 2^138087641613 is an apocalyptic number.

It is an amenable number.

138087641613 is a deficient number, since it is larger than the sum of its proper divisors (46029213875).

138087641613 is an equidigital number, since it uses as much as digits as its factorization.

138087641613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46029213874.

The product of its (nonzero) digits is 580608, while the sum is 48.

The spelling of 138087641613 in words is "one hundred thirty-eight billion, eighty-seven million, six hundred forty-one thousand, six hundred thirteen".