74053221858 has 378 divisors, whose sum is σ = 218569282113. Its totient is φ = 18103155840.

The previous prime is 74053221839. The next prime is 74053221859. The reversal of 74053221858 is 85812235047.

74053221858 is a `hidden beast` number, since 7 + 40 + 532 + 21 + 8 + 58 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67775353569 + 6277868289 = 260337^2 + 79233^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=192423.

It is not an unprimeable number, because it can be changed into a prime (74053221859) by changing a digit.

It is a polite number, since it can be written in 188 ways as a sum of consecutive naturals, for example, 4356071866 + ... + 4356071882.

Almost surely, 2^74053221858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74053221858

74053221858 is an abundant number, since it is smaller than the sum of its proper divisors (144516060255).

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

74053221858 is an equidigital number, since it uses as much as digits as its factorization.

74053221858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 74053221858 in words is "seventy-four billion, fifty-three million, two hundred twenty-one thousand, eight hundred fifty-eight".