2691045851328 has 1120 divisors, whose sum is σ = 9202615234560. Its totient is φ = 772533780480.

The previous prime is 2691045851317. The next prime is 2691045851339. The reversal of 2691045851328 is 8231585401962.

2691045851328 is a `hidden beast` number, since 2 + 69 + 1 + 0 + 45 + 8 + 513 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (2691045851317) and next prime (2691045851339).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7100384643 + ... + 7100385021.

Almost surely, 2^{2691045851328} 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 2691045851328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4601307617280).

2691045851328 is an abundant number, since it is smaller than the sum of its proper divisors (6511569383232).

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

2691045851328 is a wasteful number, since it uses less digits than its factorization.

2691045851328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587 (or 568 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 54.

The spelling of 2691045851328 in words is "two trillion, six hundred ninety-one billion, forty-five million, eight hundred fifty-one thousand, three hundred twenty-eight".