650389190988 has 54 divisors (see below), whose sum is σ = 1601781669684. Its totient is φ = 205369298208.

The previous prime is 650389190963. The next prime is 650389191043. The reversal of 650389190988 is 889091983056.

It is a super-2 number, since 2×650389190988² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 53073870 + ... + 53086122.

Almost surely, 2^650389190988 is an apocalyptic number.

It is an amenable number.

650389190988 is an abundant number, since it is smaller than the sum of its proper divisors (951392478696).

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

650389190988 is an equidigital number, since it uses as much as digits as its factorization.

650389190988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24551 (or 12277 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 66.

The spelling of 650389190988 in words is "six hundred fifty billion, three hundred eighty-nine million, one hundred ninety thousand, nine hundred eighty-eight".