84120072444413 has 2 divisors, whose sum is σ = 84120072444414. Its totient is φ = 84120072444412.

The previous prime is 84120072444389. The next prime is 84120072444467. The reversal of 84120072444413 is 31444427002148.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80083115472889 + 4036956971524 = 8948917^2 + 2009218^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84120072444413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84120072444313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42060036222206 + 42060036222207.

It is an arithmetic number, because the mean of its divisors is an integer number (42060036222207).

Almost surely, 2^{84120072444413} is an apocalyptic number.

It is an amenable number.

84120072444413 is a deficient number, since it is larger than the sum of its proper divisors (1).

84120072444413 is an equidigital number, since it uses as much as digits as its factorization.

84120072444413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 688128, while the sum is 44.

The spelling of 84120072444413 in words is "eighty-four trillion, one hundred twenty billion, seventy-two million, four hundred forty-four thousand, four hundred thirteen".