87464646478 has 48 divisors (see below), whose sum is σ = 147665271600. Its totient is φ = 38804895360.

The previous prime is 87464646473. The next prime is 87464646523.

87464646478 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87464646473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25357698 + ... + 25361146.

It is an arithmetic number, because the mean of its divisors is an integer number (3076359825).

Almost surely, 2^87464646478 is an apocalyptic number.

87464646478 is a deficient number, since it is larger than the sum of its proper divisors (60200625122).

87464646478 is a wasteful number, since it uses less digits than its factorization.

87464646478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5953 (or 5942 counting only the distinct ones).

The product of its digits is 173408256, while the sum is 64.

The spelling of 87464646478 in words is "eighty-seven billion, four hundred sixty-four million, six hundred forty-six thousand, four hundred seventy-eight".