80957811 has 16 divisors (see below), whose sum is σ = 118085760. Its totient is φ = 48928320.

The previous prime is 80957783. The next prime is 80957819. The reversal of 80957811 is 11875908.

It is not a de Polignac number, because 80957811 - 2¹³ = 80949619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80957811.

It is not an unprimeable number, because it can be changed into a prime (80957819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9271 + ... + 15743.

It is an arithmetic number, because the mean of its divisors is an integer number (7380360).

Almost surely, 2^80957811 is an apocalyptic number.

80957811 is a deficient number, since it is larger than the sum of its proper divisors (37127949).

80957811 is a wasteful number, since it uses less digits than its factorization.

80957811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6866.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 80957811 is about 8997.6558613897. The cubic root of 80957811 is about 432.5997382104.

The spelling of 80957811 in words is "eighty million, nine hundred fifty-seven thousand, eight hundred eleven".