1268933979155 has 8 divisors (see below), whose sum is σ = 1523350793952. Its totient is φ = 1014727170688.

The previous prime is 1268933979149. The next prime is 1268933979191. The reversal of 1268933979155 is 5519793398621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1268933979155 - 2¹⁸ = 1268933717011 is a prime.

It is a super-2 number, since 2×1268933979155² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52488287 + ... + 52512456.

It is an arithmetic number, because the mean of its divisors is an integer number (190418849244).

Almost surely, 2^{1268933979155} is an apocalyptic number.

1268933979155 is a deficient number, since it is larger than the sum of its proper divisors (254416814797).

1268933979155 is a wasteful number, since it uses less digits than its factorization.

1268933979155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105003165.

The product of its digits is 110224800, while the sum is 68.

The spelling of 1268933979155 in words is "one trillion, two hundred sixty-eight billion, nine hundred thirty-three million, nine hundred seventy-nine thousand, one hundred fifty-five".