811404049994 has 4 divisors (see below), whose sum is σ = 1217106074994. Its totient is φ = 405702024996.

The previous prime is 811404049943. The next prime is 811404049999. The reversal of 811404049994 is 499940404118.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 805569076225 + 5834973769 = 897535^2 + 76387^2 .

It is not an unprimeable number, because it can be changed into a prime (811404049999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202851012497 + ... + 202851012500.

Almost surely, 2^811404049994 is an apocalyptic number.

811404049994 is a deficient number, since it is larger than the sum of its proper divisors (405702025000).

811404049994 is a wasteful number, since it uses less digits than its factorization.

811404049994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405702024999.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 811404049994 in words is "eight hundred eleven billion, four hundred four million, forty-nine thousand, nine hundred ninety-four".