74665120205 has 24 divisors (see below), whose sum is σ = 97280994888. Its totient is φ = 54989266176.

The previous prime is 74665120183. The next prime is 74665120207. The reversal of 74665120205 is 50202156647.

It can be written as a sum of positive squares in 12 ways, for example, as 39478113481 + 35187006724 = 198691^2 + 187582^2 .

It is not a de Polignac number, because 74665120205 - 2¹⁶ = 74665054669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74665120207) 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 in 23 ways as a sum of consecutive naturals, for example, 196739 + ... + 433631.

It is an arithmetic number, because the mean of its divisors is an integer number (4053374787).

Almost surely, 2^74665120205 is an apocalyptic number.

It is an amenable number.

74665120205 is a deficient number, since it is larger than the sum of its proper divisors (22615874683).

74665120205 is a wasteful number, since it uses less digits than its factorization.

74665120205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237297 (or 237284 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 38.

The spelling of 74665120205 in words is "seventy-four billion, six hundred sixty-five million, one hundred twenty thousand, two hundred five".