648091698176 has 88 divisors (see below), whose sum is σ = 1400146427904. Its totient is φ = 298060554240.

The previous prime is 648091698157. The next prime is 648091698181. The reversal of 648091698176 is 671896190846.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3681281 + ... + 3853311.

Almost surely, 2^648091698176 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 648091698176, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (700073213952).

648091698176 is an abundant number, since it is smaller than the sum of its proper divisors (752054729728).

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

648091698176 is a wasteful number, since it uses less digits than its factorization.

648091698176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172347 (or 172329 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 65.

The spelling of 648091698176 in words is "six hundred forty-eight billion, ninety-one million, six hundred ninety-eight thousand, one hundred seventy-six".