139108516893 has 12 divisors (see below), whose sum is σ = 201568391388. Its totient is φ = 92446457280.

The previous prime is 139108516873. The next prime is 139108516969. The reversal of 139108516893 is 398615801931.

139108516893 is a `hidden beast` number, since 1 + 39 + 1 + 0 + 8 + 516 + 8 + 93 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6988625604 + 132119891289 = 83598^2 + 363483^2 .

It is not a de Polignac number, because 139108516893 - 2³⁰ = 138034775069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139108516873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24376488 + ... + 24382193.

It is an arithmetic number, because the mean of its divisors is an integer number (16797365949).

Almost surely, 2^139108516893 is an apocalyptic number.

It is an amenable number.

139108516893 is a deficient number, since it is larger than the sum of its proper divisors (62459874495).

139108516893 is a wasteful number, since it uses less digits than its factorization.

139108516893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48759004 (or 48759001 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The spelling of 139108516893 in words is "one hundred thirty-nine billion, one hundred eight million, five hundred sixteen thousand, eight hundred ninety-three".