68411291893 has 4 divisors (see below), whose sum is σ = 78184333600. Its totient is φ = 58638250188.

The previous prime is 68411291891. The next prime is 68411291903. The reversal of 68411291893 is 39819211486.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68411291893 - 2¹ = 68411291891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68411291893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68411291891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4886520843 + ... + 4886520856.

It is an arithmetic number, because the mean of its divisors is an integer number (19546083400).

Almost surely, 2^68411291893 is an apocalyptic number.

It is an amenable number.

68411291893 is a deficient number, since it is larger than the sum of its proper divisors (9773041707).

68411291893 is an equidigital number, since it uses as much as digits as its factorization.

68411291893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9773041706.

The product of its digits is 746496, while the sum is 52.

The spelling of 68411291893 in words is "sixty-eight billion, four hundred eleven million, two hundred ninety-one thousand, eight hundred ninety-three".