1261968119349 has 32 divisors (see below), whose sum is σ = 1959906945024. Its totient is φ = 707292855360.

The previous prime is 1261968119261. The next prime is 1261968119429. The reversal of 1261968119349 is 9439118691621.

It is not a de Polignac number, because 1261968119349 - 2⁹ = 1261968118837 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1261968119292 and 1261968119301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1261968119249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3341184 + ... + 3699654.

It is an arithmetic number, because the mean of its divisors is an integer number (61247092032).

Almost surely, 2^{1261968119349} is an apocalyptic number.

It is an amenable number.

1261968119349 is a deficient number, since it is larger than the sum of its proper divisors (697938825675).

1261968119349 is a wasteful number, since it uses less digits than its factorization.

1261968119349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361697.

The product of its digits is 5038848, while the sum is 60.

The spelling of 1261968119349 in words is "one trillion, two hundred sixty-one billion, nine hundred sixty-eight million, one hundred nineteen thousand, three hundred forty-nine".