1280872432047 has 8 divisors (see below), whose sum is σ = 1839201440944. Its totient is φ = 788229188928.

The previous prime is 1280872432003. The next prime is 1280872432057. The reversal of 1280872432047 is 7402342780821.

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 1280872432047 - 2⁷ = 1280872431919 is a prime.

It is a super-2 number, since 2×1280872432047² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1280872431987 and 1280872432005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280872432057) 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, 16421441398 + ... + 16421441475.

It is an arithmetic number, because the mean of its divisors is an integer number (229900180118).

Almost surely, 2^{1280872432047} is an apocalyptic number.

1280872432047 is a deficient number, since it is larger than the sum of its proper divisors (558329008897).

1280872432047 is a wasteful number, since it uses less digits than its factorization.

1280872432047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32842882889.

The product of its (nonzero) digits is 1204224, while the sum is 48.

The spelling of 1280872432047 in words is "one trillion, two hundred eighty billion, eight hundred seventy-two million, four hundred thirty-two thousand, forty-seven".