1328967261916 has 144 divisors (see below), whose sum is σ = 2887371863040. Its totient is φ = 523997735040.

The previous prime is 1328967261913. The next prime is 1328967261943. The reversal of 1328967261916 is 6191627698231.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328967261911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48696811 + ... + 48724093.

Almost surely, 2^{1328967261916} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1328967261916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443685931520).

1328967261916 is an abundant number, since it is smaller than the sum of its proper divisors (1558404601124).

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

1328967261916 is a wasteful number, since it uses less digits than its factorization.

1328967261916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27472 (or 27451 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 61.

The spelling of 1328967261916 in words is "one trillion, three hundred twenty-eight billion, nine hundred sixty-seven million, two hundred sixty-one thousand, nine hundred sixteen".