1256380941470 has 32 divisors (see below), whose sum is σ = 2270723677056. Its totient is φ = 500503449600.

The previous prime is 1256380941449. The next prime is 1256380941481. The reversal of 1256380941470 is 741490836521.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2297915 + ... + 2791625.

It is an arithmetic number, because the mean of its divisors is an integer number (70960114908).

It is a 1-persistent number, because it is pandigital, but 2⋅1256380941470 = 2512761882940 is not.

Almost surely, 2^{1256380941470} is an apocalyptic number.

1256380941470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1256380941470 is a deficient number, since it is larger than the sum of its proper divisors (1014342735586).

1256380941470 is a wasteful number, since it uses less digits than its factorization.

1256380941470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494756.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The spelling of 1256380941470 in words is "one trillion, two hundred fifty-six billion, three hundred eighty million, nine hundred forty-one thousand, four hundred seventy".