1101281591328 has 24 divisors (see below), whose sum is σ = 2890864177488. Its totient is φ = 367093863744.

The previous prime is 1101281591243. The next prime is 1101281591339. The reversal of 1101281591328 is 8231951821011.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×1101281591328² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1101281591328.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5735841526 + ... + 5735841717.

It is an arithmetic number, because the mean of its divisors is an integer number (120452674062).

Almost surely, 2^{1101281591328} is an apocalyptic number.

It is an amenable number.

1101281591328 is an abundant number, since it is smaller than the sum of its proper divisors (1789582586160).

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

1101281591328 is a wasteful number, since it uses less digits than its factorization.

1101281591328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11471683256 (or 11471683248 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 42.

The spelling of 1101281591328 in words is "one trillion, one hundred one billion, two hundred eighty-one million, five hundred ninety-one thousand, three hundred twenty-eight".