811242923541 has 16 divisors (see below), whose sum is σ = 1159082737344. Its totient is φ = 502882452224.

The previous prime is 811242923527. The next prime is 811242923549. The reversal of 811242923541 is 145329242118.

It is a happy number.

811242923541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 811242923541 - 2²⁶ = 811175814677 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 811242923493 and 811242923502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (811242923549) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95819406 + ... + 95827871.

It is an arithmetic number, because the mean of its divisors is an integer number (72442671084).

Almost surely, 2^811242923541 is an apocalyptic number.

It is an amenable number.

811242923541 is a deficient number, since it is larger than the sum of its proper divisors (347839813803).

811242923541 is a wasteful number, since it uses less digits than its factorization.

811242923541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191647380.

The product of its digits is 138240, while the sum is 42.

The spelling of 811242923541 in words is "eight hundred eleven billion, two hundred forty-two million, nine hundred twenty-three thousand, five hundred forty-one".