80199569865 has 8 divisors (see below), whose sum is σ = 128319311808. Its totient is φ = 42773103920.

The previous prime is 80199569839. The next prime is 80199569881. The reversal of 80199569865 is 56896599108.

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

It is not a de Polignac number, because 80199569865 - 2²⁴ = 80182792649 is a prime.

It is a super-2 number, since 2×80199569865² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80199569796 and 80199569805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2673318981 + ... + 2673319010.

It is an arithmetic number, because the mean of its divisors is an integer number (16039913976).

Almost surely, 2^80199569865 is an apocalyptic number.

It is an amenable number.

80199569865 is a deficient number, since it is larger than the sum of its proper divisors (48119741943).

80199569865 is a wasteful number, since it uses less digits than its factorization.

80199569865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5346637999.

The product of its (nonzero) digits is 41990400, while the sum is 66.

It can be divided in two parts, 801995 and 69865, that added together give a triangular number (871860 = T₁₃₂₀).

The spelling of 80199569865 in words is "eighty billion, one hundred ninety-nine million, five hundred sixty-nine thousand, eight hundred sixty-five".