78540313011 has 8 divisors (see below), whose sum is σ = 105263010960. Its totient is φ = 52088911872.

The previous prime is 78540312979. The next prime is 78540313039. The reversal of 78540313011 is 11031304587.

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

It is not a de Polignac number, because 78540313011 - 2⁵ = 78540312979 is a prime.

It is a super-2 number, since 2×78540313011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78540313051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67823526 + ... + 67824683.

It is an arithmetic number, because the mean of its divisors is an integer number (13157876370).

Almost surely, 2^78540313011 is an apocalyptic number.

78540313011 is a deficient number, since it is larger than the sum of its proper divisors (26722697949).

78540313011 is a wasteful number, since it uses less digits than its factorization.

78540313011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135648405.

The product of its (nonzero) digits is 10080, while the sum is 33.

Adding to 78540313011 its reverse (11031304587), we get a palindrome (89571617598).

The spelling of 78540313011 in words is "seventy-eight billion, five hundred forty million, three hundred thirteen thousand, eleven".