1272616801 has 4 divisors (see below), whose sum is σ = 1272810672. Its totient is φ = 1272422932.

The previous prime is 1272616799. The next prime is 1272616819. The reversal of 1272616801 is 1086162721.

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 1272616801 - 2¹ = 1272616799 is a prime.

It is a super-4 number, since 4×1272616801⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1272616201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86731 + ... + 100336.

It is an arithmetic number, because the mean of its divisors is an integer number (318202668).

Almost surely, 2^1272616801 is an apocalyptic number.

It is an amenable number.

1272616801 is a deficient number, since it is larger than the sum of its proper divisors (193871).

1272616801 is an equidigital number, since it uses as much as digits as its factorization.

1272616801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193870.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 1272616801 is about 35673.7550728824. The cubic root of 1272616801 is about 1083.6754067894.

The spelling of 1272616801 in words is "one billion, two hundred seventy-two million, six hundred sixteen thousand, eight hundred one".