78513461535 has 16 divisors (see below), whose sum is σ = 125625221856. Its totient is φ = 41872618368.

The previous prime is 78513461501. The next prime is 78513461567. The reversal of 78513461535 is 53516431587.

It is not a de Polignac number, because 78513461535 - 2¹⁰ = 78513460511 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 716197 + ... + 818513.

It is an arithmetic number, because the mean of its divisors is an integer number (7851576366).

Almost surely, 2^78513461535 is an apocalyptic number.

78513461535 is a deficient number, since it is larger than the sum of its proper divisors (47111760321).

78513461535 is a wasteful number, since it uses less digits than its factorization.

78513461535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153482.

The product of its digits is 1512000, while the sum is 48.

The spelling of 78513461535 in words is "seventy-eight billion, five hundred thirteen million, four hundred sixty-one thousand, five hundred thirty-five".