1278060417793 has 4 divisors (see below), whose sum is σ = 1279909999408. Its totient is φ = 1276210836180.

The previous prime is 1278060417791. The next prime is 1278060417847. The reversal of 1278060417793 is 3977140608721.

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.

It is a cyclic number.

It is not a de Polignac number, because 1278060417793 - 2¹ = 1278060417791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1278060417791) 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, 924789771 + ... + 924791152.

It is an arithmetic number, because the mean of its divisors is an integer number (319977499852).

Almost surely, 2^{1278060417793} is an apocalyptic number.

It is an amenable number.

1278060417793 is a deficient number, since it is larger than the sum of its proper divisors (1849581615).

1278060417793 is an equidigital number, since it uses as much as digits as its factorization.

1278060417793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1849581614.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The spelling of 1278060417793 in words is "one trillion, two hundred seventy-eight billion, sixty million, four hundred seventeen thousand, seven hundred ninety-three".