138881177409513 has 32 divisors (see below), whose sum is σ = 244447847792640. Its totient is φ = 67902179938560.

The previous prime is 138881177409503. The next prime is 138881177409521. The reversal of 138881177409513 is 315904771188831.

It is not a de Polignac number, because 138881177409513 - 2⁴ = 138881177409497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138881177409503) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17682855433 + ... + 17682863286.

It is an arithmetic number, because the mean of its divisors is an integer number (7638995243520).

Almost surely, 2^{138881177409513} is an apocalyptic number.

It is an amenable number.

138881177409513 is a deficient number, since it is larger than the sum of its proper divisors (105566670383127).

138881177409513 is a wasteful number, since it uses less digits than its factorization.

138881177409513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35365718757.

The product of its (nonzero) digits is 40642560, while the sum is 66.

The spelling of 138881177409513 in words is "one hundred thirty-eight trillion, eight hundred eighty-one billion, one hundred seventy-seven million, four hundred nine thousand, five hundred thirteen".