2051355648 has 88 divisors (see below), whose sum is σ = 5705529408. Its totient is φ = 654032896.

The previous prime is 2051355613. The next prime is 2051355659. The reversal of 2051355648 is 8465531502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56140 + ... + 85172.

Almost surely, 2^2051355648 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 2051355648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2852764704).

2051355648 is an abundant number, since it is smaller than the sum of its proper divisors (3654173760).

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

2051355648 is a wasteful number, since it uses less digits than its factorization.

2051355648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29079 (or 29061 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The square root of 2051355648 is about 45291.8938442631. The cubic root of 2051355648 is about 1270.6140515371.

The spelling of 2051355648 in words is "two billion, fifty-one million, three hundred fifty-five thousand, six hundred forty-eight".