74563826249 has 6 divisors (see below), whose sum is σ = 81958586010. Its totient is φ = 67785296480.

The previous prime is 74563826219. The next prime is 74563826251. The reversal of 74563826249 is 94262836547.

It can be written as a sum of positive squares in only one way, i.e., 54443822224 + 20120004025 = 233332^2 + 141845^2 .

It is not a de Polignac number, because 74563826249 - 2³⁶ = 5844349513 is a prime.

It is a super-2 number, since 2×74563826249² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74563826194 and 74563826203.

It is not an unprimeable number, because it can be changed into a prime (74563826219) 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 5 ways as a sum of consecutive naturals, for example, 308114864 + ... + 308115105.

It is an arithmetic number, because the mean of its divisors is an integer number (13659764335).

Almost surely, 2^74563826249 is an apocalyptic number.

It is an amenable number.

74563826249 is a deficient number, since it is larger than the sum of its proper divisors (7394759761).

74563826249 is a wasteful number, since it uses less digits than its factorization.

74563826249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616229991 (or 616229980 counting only the distinct ones).

The product of its digits is 17418240, while the sum is 56.

The spelling of 74563826249 in words is "seventy-four billion, five hundred sixty-three million, eight hundred twenty-six thousand, two hundred forty-nine".