1275045755940 has 72 divisors (see below), whose sum is σ = 4219242326208. Its totient is φ = 309102000960.

The previous prime is 1275045755923. The next prime is 1275045755947. The reversal of 1275045755940 is 495575405721.

1275045755940 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 0 + 45 + 7 + 5 + 594 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (1275045755947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 321979272 + ... + 321983231.

It is an arithmetic number, because the mean of its divisors is an integer number (58600587864).

Almost surely, 2^{1275045755940} is an apocalyptic number.

1275045755940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275045755940 is an abundant number, since it is smaller than the sum of its proper divisors (2944196570268).

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

1275045755940 is a wasteful number, since it uses less digits than its factorization.

1275045755940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643962529 (or 643962524 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 54.

The spelling of 1275045755940 in words is "one trillion, two hundred seventy-five billion, forty-five million, seven hundred fifty-five thousand, nine hundred forty".