78510475311 has 16 divisors (see below), whose sum is σ = 104845238784. Its totient is φ = 52258067264.

The previous prime is 78510475297. The next prime is 78510475391. The reversal of 78510475311 is 11357401587.

It is a cyclic number.

It is not a de Polignac number, because 78510475311 - 2⁶ = 78510475247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78510475391) 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, 8754916 + ... + 8763878.

It is an arithmetic number, because the mean of its divisors is an integer number (6552827424).

Almost surely, 2^78510475311 is an apocalyptic number.

78510475311 is a deficient number, since it is larger than the sum of its proper divisors (26334763473).

78510475311 is a wasteful number, since it uses less digits than its factorization.

78510475311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13230.

The product of its (nonzero) digits is 117600, while the sum is 42.

Adding to 78510475311 its reverse (11357401587), we get a palindrome (89867876898).

The spelling of 78510475311 in words is "seventy-eight billion, five hundred ten million, four hundred seventy-five thousand, three hundred eleven".