7841128012045 has 4 divisors (see below), whose sum is σ = 9409353614460. Its totient is φ = 6272902409632.

The previous prime is 7841128012043. The next prime is 7841128012093. The reversal of 7841128012045 is 5402108211487.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1618627696009 + 6222500316036 = 1272253^2 + 2494494^2 .

It is a cyclic number.

It is not a de Polignac number, because 7841128012045 - 2¹ = 7841128012043 is a prime.

It is a super-2 number, since 2×7841128012045² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7841128011992 and 7841128012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7841128012043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 784112801200 + ... + 784112801209.

It is an arithmetic number, because the mean of its divisors is an integer number (2352338403615).

Almost surely, 2^{7841128012045} is an apocalyptic number.

It is an amenable number.

7841128012045 is a deficient number, since it is larger than the sum of its proper divisors (1568225602415).

7841128012045 is a wasteful number, since it uses less digits than its factorization.

7841128012045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568225602414.

The product of its (nonzero) digits is 143360, while the sum is 43.

The spelling of 7841128012045 in words is "seven trillion, eight hundred forty-one billion, one hundred twenty-eight million, twelve thousand, forty-five".