87464446478 has 4 divisors (see below), whose sum is σ = 131196669720. Its totient is φ = 43732223238.

The previous prime is 87464446441. The next prime is 87464446501.

87464446478 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 87464446478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21866111618 + ... + 21866111621.

It is an arithmetic number, because the mean of its divisors is an integer number (32799167430).

Almost surely, 2^87464446478 is an apocalyptic number.

87464446478 is a deficient number, since it is larger than the sum of its proper divisors (43732223242).

87464446478 is a wasteful number, since it uses less digits than its factorization.

87464446478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43732223241.

The product of its digits is 115605504, while the sum is 62.

The spelling of 87464446478 in words is "eighty-seven billion, four hundred sixty-four million, four hundred forty-six thousand, four hundred seventy-eight".