1268612510929 has 9 divisors (see below), whose sum is σ = 1275505533211. Its totient is φ = 1261756558480.

The previous prime is 1268612510911. The next prime is 1268612510951. The reversal of 1268612510929 is 9290152168621.

It is a happy number.

The square root of 1268612510929 is 1126327.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1166626811025 + 101985699904 = 1080105^2 + 319352^2 .

It is not a de Polignac number, because 1268612510929 - 2¹⁷ = 1268612379857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1268612510129) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 215125509 + ... + 215131405.

Almost surely, 2^{1268612510929} is an apocalyptic number.

1268612510929 is the 1126327-th square number.

1268612510929 is the 563164-th centered octagonal number.

It is an amenable number.

1268612510929 is a deficient number, since it is larger than the sum of its proper divisors (6893022282).

1268612510929 is an frugal number, since it uses more digits than its factorization.

1268612510929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12176 (or 6088 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 52.

The spelling of 1268612510929 in words is "one trillion, two hundred sixty-eight billion, six hundred twelve million, five hundred ten thousand, nine hundred twenty-nine".