84811002091 has 2 divisors, whose sum is σ = 84811002092. Its totient is φ = 84811002090.

The previous prime is 84811002083. The next prime is 84811002103. The reversal of 84811002091 is 19020011848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84811002091 - 2³ = 84811002083 is a prime.

It is not a weakly prime, because it can be changed into another prime (84811005091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42405501045 + 42405501046.

It is an arithmetic number, because the mean of its divisors is an integer number (42405501046).

Almost surely, 2^84811002091 is an apocalyptic number.

84811002091 is a deficient number, since it is larger than the sum of its proper divisors (1).

84811002091 is an equidigital number, since it uses as much as digits as its factorization.

84811002091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 34.

The spelling of 84811002091 in words is "eighty-four billion, eight hundred eleven million, two thousand, ninety-one".