78513807351 has 24 divisors (see below), whose sum is σ = 124746686064. Its totient is φ = 43770760320.

The previous prime is 78513807347. The next prime is 78513807373. The reversal of 78513807351 is 15370831587.

It is not a de Polignac number, because 78513807351 - 2² = 78513807347 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78513807351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78513807391) 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 23 ways as a sum of consecutive naturals, for example, 6507480 + ... + 6519533.

It is an arithmetic number, because the mean of its divisors is an integer number (5197778586).

Almost surely, 2^78513807351 is an apocalyptic number.

78513807351 is a deficient number, since it is larger than the sum of its proper divisors (46232878713).

78513807351 is a wasteful number, since it uses less digits than its factorization.

78513807351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13027071 (or 13027064 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 48.

The spelling of 78513807351 in words is "seventy-eight billion, five hundred thirteen million, eight hundred seven thousand, three hundred fifty-one".