138471938010 has 192 divisors, whose sum is σ = 426363125760. Its totient is φ = 30512142720.

The previous prime is 138471937993. The next prime is 138471938089. The reversal of 138471938010 is 10839174831.

138471938010 is a `hidden beast` number, since 1 + 3 + 8 + 471 + 93 + 80 + 10 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5122911 + ... + 5149869.

It is an arithmetic number, because the mean of its divisors is an integer number (2220641280).

Almost surely, 2^138471938010 is an apocalyptic number.

138471938010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 138471938010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213181562880).

138471938010 is an abundant number, since it is smaller than the sum of its proper divisors (287891187750).

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

138471938010 is a wasteful number, since it uses less digits than its factorization.

138471938010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27273 (or 27270 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 138471938010 in words is "one hundred thirty-eight billion, four hundred seventy-one million, nine hundred thirty-eight thousand, ten".