74214173857 has 2 divisors, whose sum is σ = 74214173858. Its totient is φ = 74214173856.

The previous prime is 74214173849. The next prime is 74214173867. The reversal of 74214173857 is 75837141247.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37614275136 + 36599898721 = 193944^2 + 191311^2 .

It is a cyclic number.

It is not a de Polignac number, because 74214173857 - 2³ = 74214173849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74214173857.

It is not a weakly prime, because it can be changed into another prime (74214173837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37107086928 + 37107086929.

It is an arithmetic number, because the mean of its divisors is an integer number (37107086929).

Almost surely, 2^74214173857 is an apocalyptic number.

It is an amenable number.

74214173857 is a deficient number, since it is larger than the sum of its proper divisors (1).

74214173857 is an equidigital number, since it uses as much as digits as its factorization.

74214173857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1317120, while the sum is 49.

The spelling of 74214173857 in words is "seventy-four billion, two hundred fourteen million, one hundred seventy-three thousand, eight hundred fifty-seven".