688096741509 has 6 divisors (see below), whose sum is σ = 993917515526. Its totient is φ = 458731161000.

The previous prime is 688096741463. The next prime is 688096741523. The reversal of 688096741509 is 905147690886.

688096741509 is a `hidden beast` number, since 6 + 8 + 80 + 9 + 6 + 7 + 41 + 509 = 666.

It can be written as a sum of positive squares in only one way, i.e., 671011637409 + 17085104100 = 819153^2 + 130710^2 .

It is not a de Polignac number, because 688096741509 - 2¹¹ = 688096739461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (688096741609) 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, 38227596742 + ... + 38227596759.

Almost surely, 2^688096741509 is an apocalyptic number.

It is an amenable number.

688096741509 is a deficient number, since it is larger than the sum of its proper divisors (305820774017).

688096741509 is a wasteful number, since it uses less digits than its factorization.

688096741509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76455193507 (or 76455193504 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 63.

The spelling of 688096741509 in words is "six hundred eighty-eight billion, ninety-six million, seven hundred forty-one thousand, five hundred nine".