805261258478 has 8 divisors (see below), whose sum is σ = 1219180597272. Its totient is φ = 398867726056.

The previous prime is 805261258463. The next prime is 805261258507. The reversal of 805261258478 is 874852162508.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1881451325 + ... + 1881451752.

It is an arithmetic number, because the mean of its divisors is an integer number (152397574659).

Almost surely, 2^805261258478 is an apocalyptic number.

805261258478 is a deficient number, since it is larger than the sum of its proper divisors (413919338794).

805261258478 is a wasteful number, since it uses less digits than its factorization.

805261258478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3762903186.

The product of its (nonzero) digits is 8601600, while the sum is 56.

The spelling of 805261258478 in words is "eight hundred five billion, two hundred sixty-one million, two hundred fifty-eight thousand, four hundred seventy-eight".