801857849066 has 16 divisors (see below), whose sum is σ = 1273814420544. Its totient is φ = 377773391424.

The previous prime is 801857848949. The next prime is 801857849069. The reversal of 801857849066 is 660948758108.

It is not an unprimeable number, because it can be changed into a prime (801857849069) 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 7 ways as a sum of consecutive naturals, for example, 130084175 + ... + 130090338.

It is an arithmetic number, because the mean of its divisors is an integer number (79613401284).

Almost surely, 2^801857849066 is an apocalyptic number.

801857849066 is a deficient number, since it is larger than the sum of its proper divisors (471956571478).

801857849066 is a wasteful number, since it uses less digits than its factorization.

801857849066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260174605.

The product of its (nonzero) digits is 23224320, while the sum is 62.

The spelling of 801857849066 in words is "eight hundred one billion, eight hundred fifty-seven million, eight hundred forty-nine thousand, sixty-six".