138443872950 has 48 divisors (see below), whose sum is σ = 381489786960. Its totient is φ = 36918365760.

The previous prime is 138443872949. The next prime is 138443873023. The reversal of 138443872950 is 59278344831.

It is a happy number.

138443872950 is a `hidden beast` number, since 1 + 38 + 443 + 87 + 2 + 95 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51274159 + ... + 51276858.

It is an arithmetic number, because the mean of its divisors is an integer number (7947703895).

Almost surely, 2^138443872950 is an apocalyptic number.

138443872950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138443872950 is an abundant number, since it is smaller than the sum of its proper divisors (243045914010).

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

138443872950 is a wasteful number, since it uses less digits than its factorization.

138443872950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102551038 (or 102551027 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 138443872950 in words is "one hundred thirty-eight billion, four hundred forty-three million, eight hundred seventy-two thousand, nine hundred fifty".