1275531652480 has 128 divisors (see below), whose sum is σ = 3088913940000. Its totient is φ = 503607312384.

The previous prime is 1275531652471. The next prime is 1275531652487. The reversal of 1275531652480 is 842561355721.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275531652487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33416446 + ... + 33454594.

Almost surely, 2^{1275531652480} is an apocalyptic number.

1275531652480 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 1275531652480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1544456970000).

1275531652480 is an abundant number, since it is smaller than the sum of its proper divisors (1813382287520).

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

1275531652480 is an equidigital number, since it uses as much as digits as its factorization.

1275531652480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38844 (or 38832 counting only the distinct ones).

The product of its (nonzero) digits is 2016000, while the sum is 49.

The spelling of 1275531652480 in words is "one trillion, two hundred seventy-five billion, five hundred thirty-one million, six hundred fifty-two thousand, four hundred eighty".