1272133720870 has 32 divisors (see below), whose sum is σ = 2375829986400. Its totient is φ = 489848894976.

The previous prime is 1272133720813. The next prime is 1272133720877. The reversal of 1272133720870 is 780273312721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272133720877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6410680 + ... + 6606139.

It is an arithmetic number, because the mean of its divisors is an integer number (74244687075).

Almost surely, 2^{1272133720870} is an apocalyptic number.

1272133720870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272133720870 is a deficient number, since it is larger than the sum of its proper divisors (1103696265530).

1272133720870 is a wasteful number, since it uses less digits than its factorization.

1272133720870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13017192.

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 1272133720870 in words is "one trillion, two hundred seventy-two billion, one hundred thirty-three million, seven hundred twenty thousand, eight hundred seventy".