1275327844560 has 1920 divisors, whose sum is σ = 5761647230976. Its totient is φ = 245021736960.

The previous prime is 1275327844547. The next prime is 1275327844589. The reversal of 1275327844560 is 654487235721.

1275327844560 is a `hidden beast` number, since 1 + 2 + 7 + 5 + 3 + 2 + 78 + 4 + 4 + 560 = 666.

It is a super-2 number, since 2×1275327844560² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1275327844497 and 1275327844506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 7636693597 + ... + 7636693763.

Almost surely, 2^{1275327844560} is an apocalyptic number.

1275327844560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1275327844560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2880823615488).

1275327844560 is an abundant number, since it is smaller than the sum of its proper divisors (4486319386416).

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

1275327844560 is a wasteful number, since it uses less digits than its factorization.

1275327844560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 11289600, while the sum is 54.

The spelling of 1275327844560 in words is "one trillion, two hundred seventy-five billion, three hundred twenty-seven million, eight hundred forty-four thousand, five hundred sixty".