10081138520 has 32 divisors (see below), whose sum is σ = 22692294720. Its totient is φ = 4030725120.

The previous prime is 10081138519. The next prime is 10081138547. The reversal of 10081138520 is 2583118001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42440 + ... + 148200.

It is an arithmetic number, because the mean of its divisors is an integer number (709134210).

Almost surely, 2^10081138520 is an apocalyptic number.

10081138520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10081138520 is an abundant number, since it is smaller than the sum of its proper divisors (12611156200).

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

10081138520 is a wasteful number, since it uses less digits than its factorization.

10081138520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108155 (or 108151 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 29.

The spelling of 10081138520 in words is "ten billion, eighty-one million, one hundred thirty-eight thousand, five hundred twenty".