663784888347098 has 16 divisors (see below), whose sum is σ = 1139810324097984. Its totient is φ = 284005894701600.

The previous prime is 663784888347089. The next prime is 663784888347101. The reversal of 663784888347098 is 890743888487366.

It is a super-2 number, since 2×663784888347098² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39445254740 + ... + 39445271567.

It is an arithmetic number, because the mean of its divisors is an integer number (71238145256124).

Almost surely, 2^{663784888347098} is an apocalyptic number.

663784888347098 is a deficient number, since it is larger than the sum of its proper divisors (476025435750886).

663784888347098 is a wasteful number, since it uses less digits than its factorization.

663784888347098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78890526917.

The product of its (nonzero) digits is 74912366592, while the sum is 89.

The spelling of 663784888347098 in words is "six hundred sixty-three trillion, seven hundred eighty-four billion, eight hundred eighty-eight million, three hundred forty-seven thousand, ninety-eight".