805030440551 has 4 divisors (see below), whose sum is σ = 805115521392. Its totient is φ = 804945359712.

The previous prime is 805030440541. The next prime is 805030440581. The reversal of 805030440551 is 155044030508.

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 805030440551 - 2³⁴ = 787850571367 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 (805030440541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42526226 + ... + 42545151.

It is an arithmetic number, because the mean of its divisors is an integer number (201278880348).

Almost surely, 2^805030440551 is an apocalyptic number.

805030440551 is a deficient number, since it is larger than the sum of its proper divisors (85080841).

805030440551 is an equidigital number, since it uses as much as digits as its factorization.

805030440551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85080840.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 805030440551 in words is "eight hundred five billion, thirty million, four hundred forty thousand, five hundred fifty-one".