87486868478 has 4 divisors (see below), whose sum is σ = 131230302720. Its totient is φ = 43743434238.

The previous prime is 87486868471. The next prime is 87486868523.

87486868478 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87486868471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21871717118 + ... + 21871717121.

It is an arithmetic number, because the mean of its divisors is an integer number (32807575680).

Almost surely, 2^87486868478 is an apocalyptic number.

87486868478 is a deficient number, since it is larger than the sum of its proper divisors (43743434242).

87486868478 is a wasteful number, since it uses less digits than its factorization.

87486868478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43743434241.

The product of its digits is 924844032, while the sum is 74.

The spelling of 87486868478 in words is "eighty-seven billion, four hundred eighty-six million, eight hundred sixty-eight thousand, four hundred seventy-eight".