1272225173406 has 16 divisors (see below), whose sum is σ = 2775764014848. Its totient is φ = 385522779800.

The previous prime is 1272225173399. The next prime is 1272225173441. The reversal of 1272225173406 is 6043715222721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9638069430 + ... + 9638069561.

It is an arithmetic number, because the mean of its divisors is an integer number (173485250928).

Almost surely, 2^{1272225173406} is an apocalyptic number.

1272225173406 is an abundant number, since it is smaller than the sum of its proper divisors (1503538841442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1272225173406 is a wasteful number, since it uses less digits than its factorization.

1272225173406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19276139007.

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 1272225173406 in words is "one trillion, two hundred seventy-two billion, two hundred twenty-five million, one hundred seventy-three thousand, four hundred six".