1252636268667 has 12 divisors (see below), whose sum is σ = 1942864416936. Its totient is φ = 715792153440.

The previous prime is 1252636268657. The next prime is 1252636268669. The reversal of 1252636268667 is 7668626362521.

It is not a de Polignac number, because 1252636268667 - 2¹¹ = 1252636266619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1252636268667.

It is not an unprimeable number, because it can be changed into a prime (1252636268669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4260667434 + ... + 4260667727.

It is an arithmetic number, because the mean of its divisors is an integer number (161905368078).

Almost surely, 2^{1252636268667} is an apocalyptic number.

1252636268667 is a deficient number, since it is larger than the sum of its proper divisors (690228148269).

1252636268667 is an equidigital number, since it uses as much as digits as its factorization.

1252636268667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8521335178 (or 8521335171 counting only the distinct ones).

The product of its digits is 52254720, while the sum is 60.

The spelling of 1252636268667 in words is "one trillion, two hundred fifty-two billion, six hundred thirty-six million, two hundred sixty-eight thousand, six hundred sixty-seven".