1280157191360 has 112 divisors (see below), whose sum is σ = 3194225971200. Its totient is φ = 487749233664.

The previous prime is 1280157191321. The next prime is 1280157191381. The reversal of 1280157191360 is 631917510821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395161 + ... + 2122919.

Almost surely, 2^{1280157191360} is an apocalyptic number.

1280157191360 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 1280157191360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597112985600).

1280157191360 is an abundant number, since it is smaller than the sum of its proper divisors (1914068779840).

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

1280157191360 is a wasteful number, since it uses less digits than its factorization.

1280157191360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728038 (or 728028 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 44.

The spelling of 1280157191360 in words is "one trillion, two hundred eighty billion, one hundred fifty-seven million, one hundred ninety-one thousand, three hundred sixty".