811050891914 has 4 divisors (see below), whose sum is σ = 1216576337874. Its totient is φ = 405525445956.

The previous prime is 811050891913. The next prime is 811050891953. The reversal of 811050891914 is 419198050118.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 419198050118 = 2 ⋅209599025059.

It can be written as a sum of positive squares in only one way, i.e., 537765555625 + 273285336289 = 733325^2 + 522767^2 .

It is not an unprimeable number, because it can be changed into a prime (811050891913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202762722977 + ... + 202762722980.

Almost surely, 2^811050891914 is an apocalyptic number.

811050891914 is a deficient number, since it is larger than the sum of its proper divisors (405525445960).

811050891914 is a wasteful number, since it uses less digits than its factorization.

811050891914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405525445959.

The product of its (nonzero) digits is 103680, while the sum is 47.

The spelling of 811050891914 in words is "eight hundred eleven billion, fifty million, eight hundred ninety-one thousand, nine hundred fourteen".