65918918484 has 36 divisors (see below), whose sum is σ = 166776069460. Its totient is φ = 21953496960.

The previous prime is 65918918419. The next prime is 65918918489. The reversal of 65918918484 is 48481981956.

65918918484 is a `hidden beast` number, since 6 + 59 + 18 + 91 + 8 + 484 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1550154384 + 64368764100 = 39372^2 + 253710^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65918918489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 770287 + ... + 851574.

Almost surely, 2^65918918484 is an apocalyptic number.

It is an amenable number.

65918918484 is an abundant number, since it is smaller than the sum of its proper divisors (100857150976).

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

65918918484 is a wasteful number, since it uses less digits than its factorization.

65918918484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623000 (or 1622995 counting only the distinct ones).

The product of its digits is 19906560, while the sum is 63.

The spelling of 65918918484 in words is "sixty-five billion, nine hundred eighteen million, nine hundred eighteen thousand, four hundred eighty-four".