74254248202391 has 16 divisors (see below), whose sum is σ = 77610239078400. Its totient is φ = 70908962950848.

The previous prime is 74254248202289. The next prime is 74254248202403. The reversal of 74254248202391 is 19320284245247.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 74254248202391 - 2¹⁴ = 74254248186007 is a prime.

It is a super-2 number, since 2×74254248202391² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74254248202091) 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 in 15 ways as a sum of consecutive naturals, for example, 41716715 + ... + 43460243.

It is an arithmetic number, because the mean of its divisors is an integer number (4850639942400).

Almost surely, 2^{74254248202391} is an apocalyptic number.

74254248202391 is a deficient number, since it is larger than the sum of its proper divisors (3355990876009).

74254248202391 is a wasteful number, since it uses less digits than its factorization.

74254248202391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746598.

The product of its (nonzero) digits is 7741440, while the sum is 53.

The spelling of 74254248202391 in words is "seventy-four trillion, two hundred fifty-four billion, two hundred forty-eight million, two hundred two thousand, three hundred ninety-one".