84580780379 has 2 divisors, whose sum is σ = 84580780380. Its totient is φ = 84580780378.

The previous prime is 84580780363. The next prime is 84580780507. The reversal of 84580780379 is 97308708548.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84580780379 - 2⁴ = 84580780363 is a prime.

It is not a weakly prime, because it can be changed into another prime (84580780679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42290390189 + 42290390190.

It is an arithmetic number, because the mean of its divisors is an integer number (42290390190).

Almost surely, 2^84580780379 is an apocalyptic number.

84580780379 is a deficient number, since it is larger than the sum of its proper divisors (1).

84580780379 is an equidigital number, since it uses as much as digits as its factorization.

84580780379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 59.

The spelling of 84580780379 in words is "eighty-four billion, five hundred eighty million, seven hundred eighty thousand, three hundred seventy-nine".