2065551506 has 24 divisors (see below), whose sum is σ = 3219006960. Its totient is φ = 994008176.

The previous prime is 2065551479. The next prime is 2065551533. The reversal of 2065551506 is 6051555602.

It is an interprime number because it is at equal distance from previous prime (2065551479) and next prime (2065551533).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 581885 + ... + 585423.

It is an arithmetic number, because the mean of its divisors is an integer number (134125290).

Almost surely, 2^2065551506 is an apocalyptic number.

2065551506 is a deficient number, since it is larger than the sum of its proper divisors (1153455454).

2065551506 is a wasteful number, since it uses less digits than its factorization.

2065551506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3946 (or 3917 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 35.

The square root of 2065551506 is about 45448.3388695341. The cubic root of 2065551506 is about 1273.5382979329.

The spelling of 2065551506 in words is "two billion, sixty-five million, five hundred fifty-one thousand, five hundred six".