84315349961 has 2 divisors, whose sum is σ = 84315349962. Its totient is φ = 84315349960.

The previous prime is 84315349933. The next prime is 84315350023. The reversal of 84315349961 is 16994351348.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83856576400 + 458773561 = 289580^2 + 21419^2 .

It is a cyclic number.

It is not a de Polignac number, because 84315349961 - 2²² = 84311155657 is a prime.

It is not a weakly prime, because it can be changed into another prime (84315349561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42157674980 + 42157674981.

It is an arithmetic number, because the mean of its divisors is an integer number (42157674981).

Almost surely, 2^84315349961 is an apocalyptic number.

It is an amenable number.

84315349961 is a deficient number, since it is larger than the sum of its proper divisors (1).

84315349961 is an equidigital number, since it uses as much as digits as its factorization.

84315349961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2799360, while the sum is 53.

The spelling of 84315349961 in words is "eighty-four billion, three hundred fifteen million, three hundred forty-nine thousand, nine hundred sixty-one".