1268933979156 has 48 divisors (see below), whose sum is σ = 3090075899904. Its totient is φ = 404522494816.

The previous prime is 1268933979149. The next prime is 1268933979191. The reversal of 1268933979156 is 6519793398621.

It is a super-2 number, since 2×1268933979156² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1361545 + ... + 2095631.

It is an arithmetic number, because the mean of its divisors is an integer number (64376581248).

Almost surely, 2^{1268933979156} is an apocalyptic number.

It is an amenable number.

1268933979156 is an abundant number, since it is smaller than the sum of its proper divisors (1821141920748).

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

1268933979156 is a wasteful number, since it uses less digits than its factorization.

1268933979156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740380 (or 740378 counting only the distinct ones).

The product of its digits is 132269760, while the sum is 69.

The spelling of 1268933979156 in words is "one trillion, two hundred sixty-eight billion, nine hundred thirty-three million, nine hundred seventy-nine thousand, one hundred fifty-six".