87409708847 has 4 divisors (see below), whose sum is σ = 87410480040. Its totient is φ = 87408937656.

The previous prime is 87409708787. The next prime is 87409708871. The reversal of 87409708847 is 74880790478.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 87409708847 - 2¹⁶ = 87409643311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87409708847.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87409708147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178508 + ... + 454625.

It is an arithmetic number, because the mean of its divisors is an integer number (21852620010).

Almost surely, 2^87409708847 is an apocalyptic number.

87409708847 is a deficient number, since it is larger than the sum of its proper divisors (771193).

87409708847 is a wasteful number, since it uses less digits than its factorization.

87409708847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771192.

The product of its (nonzero) digits is 25288704, while the sum is 62.

The spelling of 87409708847 in words is "eighty-seven billion, four hundred nine million, seven hundred eight thousand, eight hundred forty-seven".