10023500981 has 4 divisors (see below), whose sum is σ = 10794539532. Its totient is φ = 9252462432.

The previous prime is 10023500933. The next prime is 10023500987. The reversal of 10023500981 is 18900532001.

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 1143454225 + 8880046756 = 33815^2 + 94234^2 .

It is a cyclic number.

It is not a de Polignac number, because 10023500981 - 2¹⁰ = 10023499957 is a prime.

It is a super-2 number, since 2×10023500981² (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 (10023500987) 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 3 ways as a sum of consecutive naturals, for example, 385519256 + ... + 385519281.

It is an arithmetic number, because the mean of its divisors is an integer number (2698634883).

Almost surely, 2^10023500981 is an apocalyptic number.

It is an amenable number.

10023500981 is a deficient number, since it is larger than the sum of its proper divisors (771038551).

10023500981 is an equidigital number, since it uses as much as digits as its factorization.

10023500981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771038550.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 10023500981 in words is "ten billion, twenty-three million, five hundred thousand, nine hundred eighty-one".