808984953261 has 6 divisors (see below), whose sum is σ = 1168533821390. Its totient is φ = 539323302168.

The previous prime is 808984953233. The next prime is 808984953263. The reversal of 808984953261 is 162359489808.

808984953261 is a `hidden beast` number, since 8 + 0 + 8 + 98 + 4 + 9 + 532 + 6 + 1 = 666.

808984953261 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 596399408361 + 212585544900 = 772269^2 + 461070^2 .

It is not a de Polignac number, because 808984953261 - 2⁶ = 808984953197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808984953263) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 44943608506 + ... + 44943608523.

Almost surely, 2^808984953261 is an apocalyptic number.

It is an amenable number.

808984953261 is a deficient number, since it is larger than the sum of its proper divisors (359548868129).

808984953261 is a wasteful number, since it uses less digits than its factorization.

808984953261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89887217035 (or 89887217032 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 808984953261 in words is "eight hundred eight billion, nine hundred eighty-four million, nine hundred fifty-three thousand, two hundred sixty-one".