811545043 has 8 divisors (see below), whose sum is σ = 856959120. Its totient is φ = 766401120.

The previous prime is 811545023. The next prime is 811545067. The reversal of 811545043 is 340545118.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 811545043 - 2¹⁷ = 811413971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 811544996 and 811545014.

It is not an unprimeable number, because it can be changed into a prime (811545023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61348 + ... + 73393.

It is an arithmetic number, because the mean of its divisors is an integer number (107119890).

Almost surely, 2^811545043 is an apocalyptic number.

811545043 is a deficient number, since it is larger than the sum of its proper divisors (45414077).

811545043 is a wasteful number, since it uses less digits than its factorization.

811545043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135077.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 811545043 is about 28487.6296486738. The cubic root of 811545043 is about 932.7620676643.

The spelling of 811545043 in words is "eight hundred eleven million, five hundred forty-five thousand, forty-three".