10485100981 has 4 divisors (see below), whose sum is σ = 10588913964. Its totient is φ = 10381288000.

The previous prime is 10485100939. The next prime is 10485100993. The reversal of 10485100981 is 18900158401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18900158401 = 19 ⋅994745179.

It can be written as a sum of positive squares in 2 ways, for example, as 6884020900 + 3601080081 = 82970^2 + 60009^2 .

It is a cyclic number.

It is not a de Polignac number, because 10485100981 - 2⁷ = 10485100853 is a prime.

It is a super-2 number, since 2×10485100981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10485100981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10485100181) 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, 51906340 + ... + 51906541.

It is an arithmetic number, because the mean of its divisors is an integer number (2647228491).

Almost surely, 2^10485100981 is an apocalyptic number.

It is an amenable number.

10485100981 is a deficient number, since it is larger than the sum of its proper divisors (103812983).

10485100981 is a wasteful number, since it uses less digits than its factorization.

10485100981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103812982.

The product of its (nonzero) digits is 11520, while the sum is 37.

The spelling of 10485100981 in words is "ten billion, four hundred eighty-five million, one hundred thousand, nine hundred eighty-one".