78351027841 has 4 divisors (see below), whose sum is σ = 80878480384. Its totient is φ = 75823575300.

The previous prime is 78351027827. The next prime is 78351027863. The reversal of 78351027841 is 14872015387.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14872015387 = 619 ⋅24025873.

It is a cyclic number.

It is not a de Polignac number, because 78351027841 - 2¹¹ = 78351025793 is a prime.

It is a super-2 number, since 2×78351027841² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78351027791 and 78351027800.

It is not an unprimeable number, because it can be changed into a prime (78351007841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263726225 + ... + 1263726286.

It is an arithmetic number, because the mean of its divisors is an integer number (20219620096).

Almost surely, 2^78351027841 is an apocalyptic number.

It is an amenable number.

78351027841 is a deficient number, since it is larger than the sum of its proper divisors (2527452543).

78351027841 is a wasteful number, since it uses less digits than its factorization.

78351027841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527452542.

The product of its (nonzero) digits is 376320, while the sum is 46.

The spelling of 78351027841 in words is "seventy-eight billion, three hundred fifty-one million, twenty-seven thousand, eight hundred forty-one".