74806389797 has 2 divisors, whose sum is σ = 74806389798. Its totient is φ = 74806389796.

The previous prime is 74806389719. The next prime is 74806389901. The reversal of 74806389797 is 79798360847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43678492036 + 31127897761 = 208994^2 + 176431^2 .

It is an emirp because it is prime and its reverse (79798360847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74806389797 - 2¹² = 74806385701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74806389197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37403194898 + 37403194899.

It is an arithmetic number, because the mean of its divisors is an integer number (37403194899).

Almost surely, 2^74806389797 is an apocalyptic number.

It is an amenable number.

74806389797 is a deficient number, since it is larger than the sum of its proper divisors (1).

74806389797 is an equidigital number, since it uses as much as digits as its factorization.

74806389797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128024064, while the sum is 68.

The spelling of 74806389797 in words is "seventy-four billion, eight hundred six million, three hundred eighty-nine thousand, seven hundred ninety-seven".