80198811 has 24 divisors (see below), whose sum is σ = 144428544. Its totient is φ = 41661360.

The previous prime is 80198801. The next prime is 80198819. The reversal of 80198811 is 11889108.

It is not a de Polignac number, because 80198811 - 2⁷ = 80198683 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80198819) 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, 57171 + ... + 58556.

It is an arithmetic number, because the mean of its divisors is an integer number (6017856).

Almost surely, 2^80198811 is an apocalyptic number.

80198811 is a deficient number, since it is larger than the sum of its proper divisors (64229733).

80198811 is a wasteful number, since it uses less digits than its factorization.

80198811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115751 (or 115748 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 36.

The square root of 80198811 is about 8955.3788864570. The cubic root of 80198811 is about 431.2435804968.

It can be divided in two parts, 80 and 198811, that added together give a palindrome (198891).

The spelling of 80198811 in words is "eighty million, one hundred ninety-eight thousand, eight hundred eleven".