80872767091 has 2 divisors, whose sum is σ = 80872767092. Its totient is φ = 80872767090.

The previous prime is 80872767067. The next prime is 80872767119. The reversal of 80872767091 is 19076727808.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80872767091 - 2¹³ = 80872758899 is a prime.

It is not a weakly prime, because it can be changed into another prime (80872767011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40436383545 + 40436383546.

It is an arithmetic number, because the mean of its divisors is an integer number (40436383546).

Almost surely, 2^80872767091 is an apocalyptic number.

80872767091 is a deficient number, since it is larger than the sum of its proper divisors (1).

80872767091 is an equidigital number, since it uses as much as digits as its factorization.

80872767091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2370816, while the sum is 55.

The spelling of 80872767091 in words is "eighty billion, eight hundred seventy-two million, seven hundred sixty-seven thousand, ninety-one".