1275748823145 has 16 divisors (see below), whose sum is σ = 2041286667840. Its totient is φ = 680369855424.

The previous prime is 1275748823117. The next prime is 1275748823159. The reversal of 1275748823145 is 5413288475721.

It is not a de Polignac number, because 1275748823145 - 2⁸ = 1275748822889 is a prime.

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, 1485255 + ... + 2181164.

It is an arithmetic number, because the mean of its divisors is an integer number (127580416740).

Almost surely, 2^{1275748823145} is an apocalyptic number.

1275748823145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1275748823145 is a deficient number, since it is larger than the sum of its proper divisors (765537844695).

1275748823145 is a wasteful number, since it uses less digits than its factorization.

1275748823145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689624.

The product of its digits is 15052800, while the sum is 57.

The spelling of 1275748823145 in words is "one trillion, two hundred seventy-five billion, seven hundred forty-eight million, eight hundred twenty-three thousand, one hundred forty-five".