1275278085740 has 24 divisors (see below), whose sum is σ = 2678185356000. Its totient is φ = 510091924608.

The previous prime is 1275278085733. The next prime is 1275278085751. The reversal of 1275278085740 is 475808725721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 659240 + ... + 1727759.

It is an arithmetic number, because the mean of its divisors is an integer number (111591056500).

Almost surely, 2^{1275278085740} is an apocalyptic number.

1275278085740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275278085740 is an abundant number, since it is smaller than the sum of its proper divisors (1402907270260).

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

1275278085740 is a wasteful number, since it uses less digits than its factorization.

1275278085740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2413721 (or 2413719 counting only the distinct ones).

The product of its (nonzero) digits is 8780800, while the sum is 56.

The spelling of 1275278085740 in words is "one trillion, two hundred seventy-five billion, two hundred seventy-eight million, eighty-five thousand, seven hundred forty".