87523105217000 has 64 divisors (see below), whose sum is σ = 206367456335040. Its totient is φ = 34741995912000.

The previous prime is 87523105216979. The next prime is 87523105217011. The reversal of 87523105217000 is 71250132578.

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, 333926654 + ... + 334188653.

It is an arithmetic number, because the mean of its divisors is an integer number (3224491505235).

Almost surely, 2^{87523105217000} is an apocalyptic number.

It is an amenable number.

87523105217000 is an abundant number, since it is smaller than the sum of its proper divisors (118844351118040).

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

87523105217000 is a wasteful number, since it uses less digits than its factorization.

87523105217000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668115459 (or 668115445 counting only the distinct ones).

The product of its (nonzero) digits is 117600, while the sum is 41.

Adding to 87523105217000 its reverse (71250132578), we get a palindrome (87594355349578).

The spelling of 87523105217000 in words is "eighty-seven trillion, five hundred twenty-three billion, one hundred five million, two hundred seventeen thousand".