800198661801 has 24 divisors (see below), whose sum is σ = 1340277652672. Its totient is φ = 415687615200.

The previous prime is 800198661739. The next prime is 800198661811. The reversal of 800198661801 is 108166891008.

It is not a de Polignac number, because 800198661801 - 2⁶ = 800198661737 is a prime.

It is a super-2 number, since 2×800198661801² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (800198661811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157454890 + ... + 157459971.

Almost surely, 2^800198661801 is an apocalyptic number.

It is an amenable number.

800198661801 is a deficient number, since it is larger than the sum of its proper divisors (540078990871).

800198661801 is a wasteful number, since it uses less digits than its factorization.

800198661801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314914893 (or 314914882 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 48.

The spelling of 800198661801 in words is "eight hundred billion, one hundred ninety-eight million, six hundred sixty-one thousand, eight hundred one".