74487078481 has 2 divisors, whose sum is σ = 74487078482. Its totient is φ = 74487078480.

The previous prime is 74487078443. The next prime is 74487078499. The reversal of 74487078481 is 18487078447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73988896081 + 498182400 = 272009^2 + 22320^2 .

It is a cyclic number.

It is not a de Polignac number, because 74487078481 - 2²⁵ = 74453524049 is a prime.

It is a super-2 number, since 2×74487078481² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74487018481) 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, 37243539240 + 37243539241.

It is an arithmetic number, because the mean of its divisors is an integer number (37243539241).

Almost surely, 2^74487078481 is an apocalyptic number.

It is an amenable number.

74487078481 is a deficient number, since it is larger than the sum of its proper divisors (1).

74487078481 is an equidigital number, since it uses as much as digits as its factorization.

74487078481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11239424, while the sum is 58.

The spelling of 74487078481 in words is "seventy-four billion, four hundred eighty-seven million, seventy-eight thousand, four hundred eighty-one".