87491619478 has 8 divisors (see below), whose sum is σ = 131701166568. Its totient is φ = 43591230624.

The previous prime is 87491619437. The next prime is 87491619491.

87491619478 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77288851 + ... + 77289982.

It is an arithmetic number, because the mean of its divisors is an integer number (16462645821).

Almost surely, 2^87491619478 is an apocalyptic number.

87491619478 is a deficient number, since it is larger than the sum of its proper divisors (44209547090).

87491619478 is a wasteful number, since it uses less digits than its factorization.

87491619478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154579118.

The product of its digits is 24385536, while the sum is 64.

The spelling of 87491619478 in words is "eighty-seven billion, four hundred ninety-one million, six hundred nineteen thousand, four hundred seventy-eight".