688282409091 has 8 divisors (see below), whose sum is σ = 918749191360. Its totient is φ = 458335283112.

The previous prime is 688282409081. The next prime is 688282409131. The reversal of 688282409091 is 190904282886.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 688282409091 - 2⁷ = 688282408963 is a prime.

It is a super-2 number, since 2×688282409091² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (688282409081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129910981 + ... + 129916278.

It is an arithmetic number, because the mean of its divisors is an integer number (114843648920).

Almost surely, 2^688282409091 is an apocalyptic number.

688282409091 is a deficient number, since it is larger than the sum of its proper divisors (230466782269).

688282409091 is a wasteful number, since it uses less digits than its factorization.

688282409091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259828145.

The product of its (nonzero) digits is 3981312, while the sum is 57.

The spelling of 688282409091 in words is "six hundred eighty-eight billion, two hundred eighty-two million, four hundred nine thousand, ninety-one".