1016990558208 has 72 divisors (see below), whose sum is σ = 2937255498450. Its totient is φ = 338996846592.

The previous prime is 1016990558197. The next prime is 1016990558249. The reversal of 1016990558208 is 8028550996101.

1016990558208 is a `hidden beast` number, since 1 + 0 + 1 + 69 + 9 + 0 + 558 + 20 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 832269394944 + 184721163264 = 912288^2 + 429792^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27569203 + ... + 27606066.

Almost surely, 2^{1016990558208} is an apocalyptic number.

1016990558208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1016990558208 is an abundant number, since it is smaller than the sum of its proper divisors (1920264940242).

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

1016990558208 is an equidigital number, since it uses as much as digits as its factorization.

1016990558208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55175297 (or 55175274 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 54.

The spelling of 1016990558208 in words is "one trillion, sixteen billion, nine hundred ninety million, five hundred fifty-eight thousand, two hundred eight".