1275434877340 has 96 divisors (see below), whose sum is σ = 3128609401344. Its totient is φ = 432417546240.

The previous prime is 1275434877317. The next prime is 1275434877349. The reversal of 1275434877340 is 437784345721.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275434877349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3337804 + ... + 3700243.

It is an arithmetic number, because the mean of its divisors is an integer number (32589681264).

Almost surely, 2^{1275434877340} is an apocalyptic number.

1275434877340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275434877340 is an abundant number, since it is smaller than the sum of its proper divisors (1853174524004).

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

1275434877340 is a wasteful number, since it uses less digits than its factorization.

1275434877340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7038127 (or 7038125 counting only the distinct ones).

The product of its (nonzero) digits is 15805440, while the sum is 55.

The spelling of 1275434877340 in words is "one trillion, two hundred seventy-five billion, four hundred thirty-four million, eight hundred seventy-seven thousand, three hundred forty".