1026641245256 has 32 divisors (see below), whose sum is σ = 2102409993600. Its totient is φ = 466108002240.

The previous prime is 1026641245243. The next prime is 1026641245261. The reversal of 1026641245256 is 6525421466201.

It is a Harshad number since it is a multiple of its sum of digits (44).

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 7 ways as a sum of consecutive naturals, for example, 6763376 + ... + 6913503.

It is an arithmetic number, because the mean of its divisors is an integer number (65700312300).

Almost surely, 2^{1026641245256} is an apocalyptic number.

It is an amenable number.

1026641245256 is an abundant number, since it is smaller than the sum of its proper divisors (1075768748344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1026641245256 is a wasteful number, since it uses less digits than its factorization.

1026641245256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13677749 (or 13677745 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 44.

The spelling of 1026641245256 in words is "one trillion, twenty-six billion, six hundred forty-one million, two hundred forty-five thousand, two hundred fifty-six".