1320256426135 has 16 divisors (see below), whose sum is σ = 1595657980800. Its totient is φ = 1048664526336.

The previous prime is 1320256426133. The next prime is 1320256426141. The reversal of 1320256426135 is 5316246520231.

It is a cyclic number.

It is not a de Polignac number, because 1320256426135 - 2¹ = 1320256426133 is a prime.

It is a super-2 number, since 2×1320256426135² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320256426133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1236480 + ... + 2041909.

It is an arithmetic number, because the mean of its divisors is an integer number (99728623800).

Almost surely, 2^{1320256426135} is an apocalyptic number.

1320256426135 is a deficient number, since it is larger than the sum of its proper divisors (275401554665).

1320256426135 is a wasteful number, since it uses less digits than its factorization.

1320256426135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278970.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 1320256426135 in words is "one trillion, three hundred twenty billion, two hundred fifty-six million, four hundred twenty-six thousand, one hundred thirty-five".