74254490071145 has 8 divisors (see below), whose sum is σ = 89672938328904. Its totient is φ = 59025225227904.

The previous prime is 74254490071141. The next prime is 74254490071211. The reversal of 74254490071145 is 54117009445247.

It can be written as a sum of positive squares in 4 ways, for example, as 1052981770201 + 73201508300944 = 1026149^2 + 8555788^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74254490071145 - 2² = 74254490071141 is a prime.

It is a super-3 number, since 3×74254490071145³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74254490071141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47295852764 + ... + 47295854333.

It is an arithmetic number, because the mean of its divisors is an integer number (11209117291113).

Almost surely, 2^{74254490071145} is an apocalyptic number.

It is an amenable number.

74254490071145 is a deficient number, since it is larger than the sum of its proper divisors (15418448257759).

74254490071145 is a wasteful number, since it uses less digits than its factorization.

74254490071145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94591707259.

The product of its (nonzero) digits is 5644800, while the sum is 53.

The spelling of 74254490071145 in words is "seventy-four trillion, two hundred fifty-four billion, four hundred ninety million, seventy-one thousand, one hundred forty-five".