689019518412 has 36 divisors (see below), whose sum is σ = 1742371206576. Its totient is φ = 229583109600.

The previous prime is 689019518399. The next prime is 689019518413. The reversal of 689019518412 is 214815910986.

689019518412 is a `hidden beast` number, since 6 + 89 + 0 + 1 + 9 + 518 + 41 + 2 = 666.

689019518412 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (689019518413) 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, 3659523 + ... + 3843194.

Almost surely, 2^689019518412 is an apocalyptic number.

It is an amenable number.

689019518412 is an abundant number, since it is smaller than the sum of its proper divisors (1053351688164).

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

689019518412 is a wasteful number, since it uses less digits than its factorization.

689019518412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7505278 (or 7505273 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 689019518412 in words is "six hundred eighty-nine billion, nineteen million, five hundred eighteen thousand, four hundred twelve".