78140370711 has 8 divisors (see below), whose sum is σ = 112201558000. Its totient is φ = 48086381952.

The previous prime is 78140370703. The next prime is 78140370731. The reversal of 78140370711 is 11707304187.

It is a happy number.

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

It is not a de Polignac number, because 78140370711 - 2³ = 78140370703 is a prime.

It is a super-2 number, since 2×78140370711² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2003599249 = 78140370711 / (7 + 8 + 1 + 4 + 0 + 3 + 7 + 0 + 7 + 1 + 1).

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 78140370711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78140370731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1001799586 + ... + 1001799663.

It is an arithmetic number, because the mean of its divisors is an integer number (14025194750).

Almost surely, 2^78140370711 is an apocalyptic number.

78140370711 is a deficient number, since it is larger than the sum of its proper divisors (34061187289).

78140370711 is a wasteful number, since it uses less digits than its factorization.

78140370711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2003599265.

The product of its (nonzero) digits is 32928, while the sum is 39.

Adding to 78140370711 its reverse (11707304187), we get a palindrome (89847674898).

The spelling of 78140370711 in words is "seventy-eight billion, one hundred forty million, three hundred seventy thousand, seven hundred eleven".