1361351256441 has 64 divisors (see below), whose sum is σ = 2103191101440. Its totient is φ = 774100316160.

The previous prime is 1361351256389. The next prime is 1361351256443. The reversal of 1361351256441 is 1446521531631.

It is not a de Polignac number, because 1361351256441 - 2¹⁹ = 1361350732153 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1361351256393 and 1361351256402.

It is not an unprimeable number, because it can be changed into a prime (1361351256443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 563238865 + ... + 563241281.

It is an arithmetic number, because the mean of its divisors is an integer number (32862360960).

Almost surely, 2^{1361351256441} is an apocalyptic number.

1361351256441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1361351256441 is a deficient number, since it is larger than the sum of its proper divisors (741839844999).

1361351256441 is a wasteful number, since it uses less digits than its factorization.

1361351256441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5174.

The product of its digits is 259200, while the sum is 42.

The spelling of 1361351256441 in words is "one trillion, three hundred sixty-one billion, three hundred fifty-one million, two hundred fifty-six thousand, four hundred forty-one".