1275061920880 has 160 divisors (see below), whose sum is σ = 3308283399168. Its totient is φ = 453044505600.

The previous prime is 1275061920877. The next prime is 1275061920887. The reversal of 1275061920880 is 880291605721.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275061920887) 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, 25328535 + ... + 25378825.

Almost surely, 2^{1275061920880} is an apocalyptic number.

1275061920880 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 1275061920880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1654141699584).

1275061920880 is an abundant number, since it is smaller than the sum of its proper divisors (2033221478288).

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

1275061920880 is a wasteful number, since it uses less digits than its factorization.

1275061920880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50975 (or 50969 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 1275061920880 in words is "one trillion, two hundred seventy-five billion, sixty-one million, nine hundred twenty thousand, eight hundred eighty".