87192918563 has 8 divisors (see below), whose sum is σ = 91796118720. Its totient is φ = 82591128360.

The previous prime is 87192918559. The next prime is 87192918613. The reversal of 87192918563 is 36581929178.

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

It is a cyclic number.

It is not a de Polignac number, because 87192918563 - 2² = 87192918559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87192908563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224345 + ... + 474042.

It is an arithmetic number, because the mean of its divisors is an integer number (11474514840).

Almost surely, 2^87192918563 is an apocalyptic number.

87192918563 is a deficient number, since it is larger than the sum of its proper divisors (4603200157).

87192918563 is a wasteful number, since it uses less digits than its factorization.

87192918563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704977.

The product of its digits is 6531840, while the sum is 59.

The spelling of 87192918563 in words is "eighty-seven billion, one hundred ninety-two million, nine hundred eighteen thousand, five hundred sixty-three".