68587090859 has 4 divisors (see below), whose sum is σ = 78385246704. Its totient is φ = 58788935016.

The previous prime is 68587090771. The next prime is 68587090861. The reversal of 68587090859 is 95809078586.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 68587090859 - 2¹⁶ = 68587025323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68587090795 and 68587090804.

It is not an unprimeable number, because it can be changed into a prime (68587090259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4899077912 + ... + 4899077925.

It is an arithmetic number, because the mean of its divisors is an integer number (19596311676).

Almost surely, 2^68587090859 is an apocalyptic number.

68587090859 is a deficient number, since it is larger than the sum of its proper divisors (9798155845).

68587090859 is an equidigital number, since it uses as much as digits as its factorization.

68587090859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9798155844.

The product of its (nonzero) digits is 43545600, while the sum is 65.

The spelling of 68587090859 in words is "sixty-eight billion, five hundred eighty-seven million, ninety thousand, eight hundred fifty-nine".