10812811901 has 4 divisors (see below), whose sum is σ = 10823723904. Its totient is φ = 10801899900.

The previous prime is 10812811861. The next prime is 10812811931. The reversal of 10812811901 is 10911821801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10812811901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10812811931) 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, 5454515 + ... + 5456496.

It is an arithmetic number, because the mean of its divisors is an integer number (2705930976).

Almost surely, 2^10812811901 is an apocalyptic number.

It is an amenable number.

10812811901 is a deficient number, since it is larger than the sum of its proper divisors (10912003).

10812811901 is an equidigital number, since it uses as much as digits as its factorization.

10812811901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10912002.

The product of its (nonzero) digits is 1152, while the sum is 32.

The spelling of 10812811901 in words is "ten billion, eight hundred twelve million, eight hundred eleven thousand, nine hundred one".