10009838861 has 6 divisors (see below), whose sum is σ = 11002550286. Its totient is φ = 9099853400.

The previous prime is 10009838857. The next prime is 10009838863. The reversal of 10009838861 is 16883890001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 9954052900 + 55785961 = 99770^2 + 7469^2 .

It is not a de Polignac number, because 10009838861 - 2² = 10009838857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10009838863) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41362850 + ... + 41363091.

It is an arithmetic number, because the mean of its divisors is an integer number (1833758381).

Almost surely, 2^10009838861 is an apocalyptic number.

10009838861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10009838861 is a deficient number, since it is larger than the sum of its proper divisors (992711425).

10009838861 is an equidigital number, since it uses as much as digits as its factorization.

10009838861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82725963 (or 82725952 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 44.

The spelling of 10009838861 in words is "ten billion, nine million, eight hundred thirty-eight thousand, eight hundred sixty-one".