74865891853 has 2 divisors, whose sum is σ = 74865891854. Its totient is φ = 74865891852.

The previous prime is 74865891823. The next prime is 74865891907. The reversal of 74865891853 is 35819856847.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61783564969 + 13082326884 = 248563^2 + 114378^2 .

It is a cyclic number.

It is not a de Polignac number, because 74865891853 - 2²¹ = 74863794701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74865891823) 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, 37432945926 + 37432945927.

It is an arithmetic number, because the mean of its divisors is an integer number (37432945927).

Almost surely, 2^74865891853 is an apocalyptic number.

It is an amenable number.

74865891853 is a deficient number, since it is larger than the sum of its proper divisors (1).

74865891853 is an equidigital number, since it uses as much as digits as its factorization.

74865891853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58060800, while the sum is 64.

The spelling of 74865891853 in words is "seventy-four billion, eight hundred sixty-five million, eight hundred ninety-one thousand, eight hundred fifty-three".