1305277273212 has 24 divisors (see below), whose sum is σ = 3322523968512. Its totient is φ = 395538567600.

The previous prime is 1305277273211. The next prime is 1305277273229. The reversal of 1305277273212 is 2123727725031.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1305277273211) 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, 4944231964 + ... + 4944232227.

It is an arithmetic number, because the mean of its divisors is an integer number (138438498688).

Almost surely, 2^{1305277273212} is an apocalyptic number.

1305277273212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1305277273212 is an abundant number, since it is smaller than the sum of its proper divisors (2017246695300).

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

1305277273212 is a wasteful number, since it uses less digits than its factorization.

1305277273212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9888464209 (or 9888464207 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 42.

The spelling of 1305277273212 in words is "one trillion, three hundred five billion, two hundred seventy-seven million, two hundred seventy-three thousand, two hundred twelve".