1272105275497 has 6 divisors (see below), whose sum is σ = 1479795932778. Its totient is φ = 1090375950384.

The previous prime is 1272105275473. The next prime is 1272105275587. The reversal of 1272105275497 is 7945725012721.

It can be written as a sum of positive squares in only one way, i.e., 1074848489001 + 197256786496 = 1036749^2 + 444136^2 .

It is not a de Polignac number, because 1272105275497 - 2⁷ = 1272105275369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272105275797) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12980666028 + ... + 12980666125.

It is an arithmetic number, because the mean of its divisors is an integer number (246632655463).

Almost surely, 2^{1272105275497} is an apocalyptic number.

It is an amenable number.

1272105275497 is a deficient number, since it is larger than the sum of its proper divisors (207690657281).

1272105275497 is an equidigital number, since it uses as much as digits as its factorization.

1272105275497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25961332167 (or 25961332160 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 52.

The spelling of 1272105275497 in words is "one trillion, two hundred seventy-two billion, one hundred five million, two hundred seventy-five thousand, four hundred ninety-seven".