1272264622721 has 8 divisors (see below), whose sum is σ = 1275081544320. Its totient is φ = 1269449677872.

The previous prime is 1272264622709. The next prime is 1272264622763.

1272264622721 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1272264622721 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1272264624721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798200 + ... + 1783718.

It is an arithmetic number, because the mean of its divisors is an integer number (159385193040).

Almost surely, 2^{1272264622721} is an apocalyptic number.

It is an amenable number.

1272264622721 is a deficient number, since it is larger than the sum of its proper divisors (2816921599).

1272264622721 is an equidigital number, since it uses as much as digits as its factorization.

1272264622721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 988375.

The product of its digits is 451584, while the sum is 44.

The spelling of 1272264622721 in words is "one trillion, two hundred seventy-two billion, two hundred sixty-four million, six hundred twenty-two thousand, seven hundred twenty-one".