2659953897 has 10 divisors (see below), whose sum is σ = 3973511498. Its totient is φ = 1773302544.

The previous prime is 2659953847. The next prime is 2659953911. The reversal of 2659953897 is 7983599562.

2659953897 is a `hidden beast` number, since 2 + 6 + 5 + 9 + 9 + 538 + 97 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2317555881 + 342398016 = 48141^2 + 18504^2 .

It is not a de Polignac number, because 2659953897 - 2⁶ = 2659953833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2659953827) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16419388 + ... + 16419549.

Almost surely, 2^2659953897 is an apocalyptic number.

2659953897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2659953897 is a deficient number, since it is larger than the sum of its proper divisors (1313557601).

2659953897 is an equidigital number, since it uses as much as digits as its factorization.

2659953897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32838949 (or 32838940 counting only the distinct ones).

The product of its digits is 36741600, while the sum is 63.

The square root of 2659953897 is about 51574.7408815595. The cubic root of 2659953897 is about 1385.5579773339.

The spelling of 2659953897 in words is "two billion, six hundred fifty-nine million, nine hundred fifty-three thousand, eight hundred ninety-seven".