805057772505 has 128 divisors (see below), whose sum is σ = 1557151948800. Its totient is φ = 347424989184.

The previous prime is 805057772479. The next prime is 805057772531. The reversal of 805057772505 is 505277750508.

It is an interprime number because it is at equal distance from previous prime (805057772479) and next prime (805057772531).

It is not a de Polignac number, because 805057772505 - 2⁸ = 805057772249 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 24498876 + ... + 24531714.

It is an arithmetic number, because the mean of its divisors is an integer number (12165249600).

Almost surely, 2^805057772505 is an apocalyptic number.

It is an amenable number.

805057772505 is a deficient number, since it is larger than the sum of its proper divisors (752094176295).

805057772505 is a wasteful number, since it uses less digits than its factorization.

805057772505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33063.

The product of its (nonzero) digits is 3430000, while the sum is 51.

The spelling of 805057772505 in words is "eight hundred five billion, fifty-seven million, seven hundred seventy-two thousand, five hundred five".