87491419478 has 16 divisors (see below), whose sum is σ = 132691061520. Its totient is φ = 43262076000.

The previous prime is 87491419451. The next prime is 87491419487.

87491419478 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87491419478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78593 + ... + 425628.

It is an arithmetic number, because the mean of its divisors is an integer number (8293191345).

Almost surely, 2^87491419478 is an apocalyptic number.

87491419478 is a deficient number, since it is larger than the sum of its proper divisors (45199642042).

87491419478 is a wasteful number, since it uses less digits than its factorization.

87491419478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505183.

The product of its digits is 16257024, while the sum is 62.

The spelling of 87491419478 in words is "eighty-seven billion, four hundred ninety-one million, four hundred nineteen thousand, four hundred seventy-eight".