1275643340000 has 60 divisors (see below), whose sum is σ = 3138274012104. Its totient is φ = 510257328000.

The previous prime is 1275643339967. The next prime is 1275643340003. The reversal of 1275643340000 is 433465721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275643340003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31871084 + ... + 31911083.

Almost surely, 2^{1275643340000} is an apocalyptic number.

1275643340000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275643340000 is an abundant number, since it is smaller than the sum of its proper divisors (1862630672104).

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

1275643340000 is an frugal number, since it uses more digits than its factorization.

1275643340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63782197 (or 63782174 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The spelling of 1275643340000 in words is "one trillion, two hundred seventy-five billion, six hundred forty-three million, three hundred forty thousand".