74499562656 has 144 divisors (see below), whose sum is σ = 213787461888. Its totient is φ = 24608102400.

The previous prime is 74499562651. The next prime is 74499562661. The reversal of 74499562656 is 65626599447.

74499562656 is a `hidden beast` number, since 7 + 4 + 4 + 9 + 9 + 562 + 65 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (74499562651) and next prime (74499562661).

It is a tau number, because it is divible by the number of its divisors (144).

It is a junction number, because it is equal to n+sod(n) for n = 74499562593 and 74499562602.

It is not an unprimeable number, because it can be changed into a prime (74499562651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14642545 + ... + 14647631.

It is an arithmetic number, because the mean of its divisors is an integer number (1484635152).

Almost surely, 2^74499562656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74499562656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106893730944).

74499562656 is an abundant number, since it is smaller than the sum of its proper divisors (139287899232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74499562656 is a wasteful number, since it uses less digits than its factorization.

74499562656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555 (or 5544 counting only the distinct ones).

The product of its digits is 97977600, while the sum is 63.

The spelling of 74499562656 in words is "seventy-four billion, four hundred ninety-nine million, five hundred sixty-two thousand, six hundred fifty-six".