1351260261243 has 24 divisors (see below), whose sum is σ = 2036826548640. Its totient is φ = 861612111360.

The previous prime is 1351260261199. The next prime is 1351260261283. The reversal of 1351260261243 is 3421620621531.

1351260261243 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 2 + 602 + 6 + 1 + 2 + 43 = 666.

It is not a de Polignac number, because 1351260261243 - 2⁶ = 1351260261179 is a prime.

It is a super-2 number, since 2×1351260261243² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1351260261198 and 1351260261207.

It is not an unprimeable number, because it can be changed into a prime (1351260261283) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2789973 + ... + 3238281.

It is an arithmetic number, because the mean of its divisors is an integer number (84867772860).

Almost surely, 2^{1351260261243} is an apocalyptic number.

1351260261243 is a deficient number, since it is larger than the sum of its proper divisors (685566287397).

1351260261243 is a wasteful number, since it uses less digits than its factorization.

1351260261243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462899 (or 462896 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 1351260261243 its reverse (3421620621531), we get a palindrome (4772880882774).

The spelling of 1351260261243 in words is "one trillion, three hundred fifty-one billion, two hundred sixty million, two hundred sixty-one thousand, two hundred forty-three".