1256328941923 has 8 divisors (see below), whose sum is σ = 1378948890816. Its totient is φ = 1135110364200.

The previous prime is 1256328941909. The next prime is 1256328941999. The reversal of 1256328941923 is 3291498236521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1256328941923 - 2¹³ = 1256328933731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1256320941923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 350340913 + ... + 350344498.

It is an arithmetic number, because the mean of its divisors is an integer number (172368611352).

Almost surely, 2^{1256328941923} is an apocalyptic number.

1256328941923 is a deficient number, since it is larger than the sum of its proper divisors (122619948893).

1256328941923 is a wasteful number, since it uses less digits than its factorization.

1256328941923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700685585.

The product of its digits is 5598720, while the sum is 55.

The spelling of 1256328941923 in words is "one trillion, two hundred fifty-six billion, three hundred twenty-eight million, nine hundred forty-one thousand, nine hundred twenty-three".