68495859487 has 16 divisors (see below), whose sum is σ = 75860934912. Its totient is φ = 61321043520.

The previous prime is 68495859473. The next prime is 68495859493. The reversal of 68495859487 is 78495859486.

It is not a de Polignac number, because 68495859487 - 2⁷ = 68495859359 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 (68495853487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2812798 + ... + 2837044.

It is an arithmetic number, because the mean of its divisors is an integer number (4741308432).

Almost surely, 2^68495859487 is an apocalyptic number.

68495859487 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

68495859487 is a deficient number, since it is larger than the sum of its proper divisors (7365075425).

68495859487 is a wasteful number, since it uses less digits than its factorization.

68495859487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28158.

The product of its digits is 696729600, while the sum is 73.

Subtracting 68495859487 from its reverse (78495859486), we obtain a palindrome (9999999999).

The spelling of 68495859487 in words is "sixty-eight billion, four hundred ninety-five million, eight hundred fifty-nine thousand, four hundred eighty-seven".