78485858487 has 18 divisors (see below), whose sum is σ = 113771517912. Its totient is φ = 52138536696.

The previous prime is 78485858443. The next prime is 78485858491.

78485858487 is a `hidden beast` number, since 7 + 8 + 48 + 58 + 58 + 487 = 666.

78485858487 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78485858487 - 2¹⁴ = 78485842103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78485858687) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 666358 + ... + 775244.

It is an arithmetic number, because the mean of its divisors is an integer number (6320639884).

Almost surely, 2^78485858487 is an apocalyptic number.

78485858487 is a deficient number, since it is larger than the sum of its proper divisors (35285659425).

78485858487 is a wasteful number, since it uses less digits than its factorization.

78485858487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109459 (or 109173 counting only the distinct ones).

The product of its digits is 642252800, while the sum is 72.

The spelling of 78485858487 in words is "seventy-eight billion, four hundred eighty-five million, eight hundred fifty-eight thousand, four hundred eighty-seven".