74213117477 has 2 divisors, whose sum is σ = 74213117478. Its totient is φ = 74213117476.

The previous prime is 74213117401. The next prime is 74213117519. The reversal of 74213117477 is 77471131247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51896940481 + 22316176996 = 227809^2 + 149386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74213117477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74213111477) 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, 37106558738 + 37106558739.

It is an arithmetic number, because the mean of its divisors is an integer number (37106558739).

Almost surely, 2^74213117477 is an apocalyptic number.

It is an amenable number.

74213117477 is a deficient number, since it is larger than the sum of its proper divisors (1).

74213117477 is an equidigital number, since it uses as much as digits as its factorization.

74213117477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230496, while the sum is 44.

The spelling of 74213117477 in words is "seventy-four billion, two hundred thirteen million, one hundred seventeen thousand, four hundred seventy-seven".