87489298478 has 32 divisors (see below), whose sum is σ = 133789114368. Its totient is φ = 42902244000.

The previous prime is 87489298459. The next prime is 87489298483.

87489298478 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18648113 + ... + 18652803.

It is an arithmetic number, because the mean of its divisors is an integer number (4180909824).

Almost surely, 2^87489298478 is an apocalyptic number.

87489298478 is a deficient number, since it is larger than the sum of its proper divisors (46299815890).

87489298478 is a wasteful number, since it uses less digits than its factorization.

87489298478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5648.

The product of its digits is 520224768, while the sum is 74.

The spelling of 87489298478 in words is "eighty-seven billion, four hundred eighty-nine million, two hundred ninety-eight thousand, four hundred seventy-eight".