87510505506 has 32 divisors (see below), whose sum is σ = 176481220608. Its totient is φ = 28927114320.

The previous prime is 87510505499. The next prime is 87510505529. The reversal of 87510505506 is 60550501578.

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, 1098871 + ... + 1175813.

It is an arithmetic number, because the mean of its divisors is an integer number (5515038144).

Almost surely, 2^87510505506 is an apocalyptic number.

87510505506 is an abundant number, since it is smaller than the sum of its proper divisors (88970715102).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87510505506 is a wasteful number, since it uses less digits than its factorization.

87510505506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78526.

The product of its (nonzero) digits is 210000, while the sum is 42.

The spelling of 87510505506 in words is "eighty-seven billion, five hundred ten million, five hundred five thousand, five hundred six".