138847899470 has 32 divisors (see below), whose sum is σ = 285993013248. Its totient is φ = 47544486048.

The previous prime is 138847899451. The next prime is 138847899499. The reversal of 138847899470 is 74998748831.

It is a self number, because there is not a number n which added to its sum of digits gives 138847899470.

It is a congruent number.

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, 1205102 + ... + 1315281.

It is an arithmetic number, because the mean of its divisors is an integer number (8937281664).

Almost surely, 2^138847899470 is an apocalyptic number.

138847899470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138847899470 is an abundant number, since it is smaller than the sum of its proper divisors (147145113778).

138847899470 is a wasteful number, since it uses less digits than its factorization.

138847899470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2521184.

The product of its (nonzero) digits is 97542144, while the sum is 68.

The spelling of 138847899470 in words is "one hundred thirty-eight billion, eight hundred forty-seven million, eight hundred ninety-nine thousand, four hundred seventy".