1295728951279 has 8 divisors (see below), whose sum is σ = 1481129708960. Its totient is φ = 1110402349056.

The previous prime is 1295728951261. The next prime is 1295728951313. The reversal of 1295728951279 is 9721598275921.

It is a happy number.

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

It is not a de Polignac number, because 1295728951279 - 2⁵ = 1295728951247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1295728952279) 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, 18501414 + ... + 18571315.

It is an arithmetic number, because the mean of its divisors is an integer number (185141213620).

Almost surely, 2^{1295728951279} is an apocalyptic number.

1295728951279 is a deficient number, since it is larger than the sum of its proper divisors (185400757681).

1295728951279 is an equidigital number, since it uses as much as digits as its factorization.

1295728951279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37077729.

The product of its digits is 57153600, while the sum is 67.

The spelling of 1295728951279 in words is "one trillion, two hundred ninety-five billion, seven hundred twenty-eight million, nine hundred fifty-one thousand, two hundred seventy-nine".