10383356981 has 4 divisors (see below), whose sum is σ = 10384446732. Its totient is φ = 10382267232.

The previous prime is 10383356957. The next prime is 10383357007. The reversal of 10383356981 is 18965338301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7796007025 + 2587349956 = 88295^2 + 50866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10383356981 is a prime.

It is a super-2 number, since 2×10383356981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10383350981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 530456 + ... + 549681.

It is an arithmetic number, because the mean of its divisors is an integer number (2596111683).

Almost surely, 2^10383356981 is an apocalyptic number.

It is an amenable number.

10383356981 is a deficient number, since it is larger than the sum of its proper divisors (1089751).

10383356981 is an equidigital number, since it uses as much as digits as its factorization.

10383356981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089750.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 10383356981 in words is "ten billion, three hundred eighty-three million, three hundred fifty-six thousand, nine hundred eighty-one".