80811995 has 32 divisors (see below), whose sum is σ = 111297024. Its totient is φ = 55756800.

The previous prime is 80811989. The next prime is 80812001. The reversal of 80811995 is 59911808.

It is an interprime number because it is at equal distance from previous prime (80811989) and next prime (80812001).

It is not a de Polignac number, because 80811995 - 2⁴ = 80811979 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243980 + ... + 244310.

It is an arithmetic number, because the mean of its divisors is an integer number (3478032).

Almost surely, 2^80811995 is an apocalyptic number.

80811995 is a deficient number, since it is larger than the sum of its proper divisors (30485029).

80811995 is a wasteful number, since it uses less digits than its factorization.

80811995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its (nonzero) digits is 25920, while the sum is 41.

The square root of 80811995 is about 8989.5492100550. The cubic root of 80811995 is about 432.3398585173.

The spelling of 80811995 in words is "eighty million, eight hundred eleven thousand, nine hundred ninety-five".