1275775166720 has 72 divisors (see below), whose sum is σ = 3098920991040. Its totient is φ = 503122565120.

The previous prime is 1275775166711. The next prime is 1275775166773. The reversal of 1275775166720 is 276615775721.

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, 6928130 + ... + 7109889.

It is an arithmetic number, because the mean of its divisors is an integer number (43040569320).

Almost surely, 2^{1275775166720} is an apocalyptic number.

1275775166720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275775166720 is an abundant number, since it is smaller than the sum of its proper divisors (1823145824320).

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

1275775166720 is an equidigital number, since it uses as much as digits as its factorization.

1275775166720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14038111 (or 14038097 counting only the distinct ones).

The product of its (nonzero) digits is 8643600, while the sum is 56.

The spelling of 1275775166720 in words is "one trillion, two hundred seventy-five billion, seven hundred seventy-five million, one hundred sixty-six thousand, seven hundred twenty".