1272651137053 has 4 divisors (see below), whose sum is σ = 1302247675168. Its totient is φ = 1243054598940.

The previous prime is 1272651136993. The next prime is 1272651137057. The reversal of 1272651137053 is 3507311562721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1272651137053 - 2⁹ = 1272651136541 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 29596538071 = 1272651137053 / (1 + 2 + 7 + 2 + 6 + 5 + 1 + 1 + 3 + 7 + 0 + 5 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272651137057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14798268993 + ... + 14798269078.

It is an arithmetic number, because the mean of its divisors is an integer number (325561918792).

Almost surely, 2^{1272651137053} is an apocalyptic number.

It is an amenable number.

1272651137053 is a deficient number, since it is larger than the sum of its proper divisors (29596538115).

1272651137053 is an equidigital number, since it uses as much as digits as its factorization.

1272651137053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29596538114.

The product of its (nonzero) digits is 264600, while the sum is 43.

Adding to 1272651137053 its reverse (3507311562721), we get a palindrome (4779962699774).

The spelling of 1272651137053 in words is "one trillion, two hundred seventy-two billion, six hundred fifty-one million, one hundred thirty-seven thousand, fifty-three".