811451362399 has 4 divisors (see below), whose sum is σ = 814994818360. Its totient is φ = 807907906440.

The previous prime is 811451362373. The next prime is 811451362433. The reversal of 811451362399 is 993263154118.

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

It is a cyclic number.

It is not a de Polignac number, because 811451362399 - 2⁵ = 811451362367 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 (811451362699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1771727637 + ... + 1771728094.

It is an arithmetic number, because the mean of its divisors is an integer number (203748704590).

Almost surely, 2^811451362399 is an apocalyptic number.

811451362399 is a deficient number, since it is larger than the sum of its proper divisors (3543455961).

811451362399 is a wasteful number, since it uses less digits than its factorization.

811451362399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543455960.

The product of its digits is 1399680, while the sum is 52.

The spelling of 811451362399 in words is "eight hundred eleven billion, four hundred fifty-one million, three hundred sixty-two thousand, three hundred ninety-nine".