1274445678065 has 16 divisors (see below), whose sum is σ = 1823803008768. Its totient is φ = 835909711296.

The previous prime is 1274445678049. The next prime is 1274445678073. The reversal of 1274445678065 is 5608765444721.

It is a cyclic number.

It is not a de Polignac number, because 1274445678065 - 2⁴ = 1274445678049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1274445677995 and 1274445678013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 791580362 + ... + 791581971.

It is an arithmetic number, because the mean of its divisors is an integer number (113987688048).

Almost surely, 2^{1274445678065} is an apocalyptic number.

It is an amenable number.

1274445678065 is a deficient number, since it is larger than the sum of its proper divisors (549357330703).

1274445678065 is a wasteful number, since it uses less digits than its factorization.

1274445678065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1583162368.

The product of its (nonzero) digits is 45158400, while the sum is 59.

The spelling of 1274445678065 in words is "one trillion, two hundred seventy-four billion, four hundred forty-five million, six hundred seventy-eight thousand, sixty-five".