10000005981 has 8 divisors (see below), whose sum is σ = 15238104384. Its totient is φ = 5714289120.

The previous prime is 10000005973. The next prime is 10000006069. The reversal of 10000005981 is 18950000001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 10000005981 - 2³ = 10000005973 is a prime.

It is a super-2 number, since 2×10000005981² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10000007981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238095360 + ... + 238095401.

It is an arithmetic number, because the mean of its divisors is an integer number (1904763048).

Almost surely, 2^10000005981 is an apocalyptic number.

It is an amenable number.

10000005981 is a deficient number, since it is larger than the sum of its proper divisors (5238098403).

10000005981 is an equidigital number, since it uses as much as digits as its factorization.

10000005981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476190771.

The product of its (nonzero) digits is 360, while the sum is 24.

Adding to 10000005981 its reverse (18950000001), we get a palindrome (28950005982).

The spelling of 10000005981 in words is "ten billion, five thousand, nine hundred eighty-one".