138051641644 has 48 divisors (see below), whose sum is σ = 300656966400. Its totient is φ = 54118241856.

The previous prime is 138051641597. The next prime is 138051641657. The reversal of 138051641644 is 446146150831.

It is a self number, because there is not a number n which added to its sum of digits gives 138051641644.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4458634 + ... + 4489489.

It is an arithmetic number, because the mean of its divisors is an integer number (6263686800).

Almost surely, 2^138051641644 is an apocalyptic number.

138051641644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138051641644 is an abundant number, since it is smaller than the sum of its proper divisors (162605324756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138051641644 is a wasteful number, since it uses less digits than its factorization.

138051641644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8948182 (or 8948180 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 138051641644 in words is "one hundred thirty-eight billion, fifty-one million, six hundred forty-one thousand, six hundred forty-four".