2152797066 has 72 divisors (see below), whose sum is σ = 5468935680. Its totient is φ = 610209936.

The previous prime is 2152797061. The next prime is 2152797103. The reversal of 2152797066 is 6607972512.

It is not an unprimeable number, because it can be changed into a prime (2152797061) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 102405 + ... + 121623.

It is an arithmetic number, because the mean of its divisors is an integer number (75957440).

Almost surely, 2^2152797066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2152797066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2734467840).

2152797066 is an abundant number, since it is smaller than the sum of its proper divisors (3316138614).

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

2152797066 is a wasteful number, since it uses less digits than its factorization.

2152797066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19368 (or 19358 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 2152797066 is about 46398.2442124699. The cubic root of 2152797066 is about 1291.2223387937. Note that the first 3 decimals are identical.

The spelling of 2152797066 in words is "two billion, one hundred fifty-two million, seven hundred ninety-seven thousand, sixty-six".