6553991098 has 4 divisors (see below), whose sum is σ = 9830986650. Its totient is φ = 3276995548.

The previous prime is 6553991069. The next prime is 6553991111. The reversal of 6553991098 is 8901993556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 4490742169 + 2063248929 = 67013^2 + 45423^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638497773 + ... + 1638497776.

Almost surely, 2^6553991098 is an apocalyptic number.

6553991098 is a deficient number, since it is larger than the sum of its proper divisors (3276995552).

6553991098 is a wasteful number, since it uses less digits than its factorization.

6553991098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3276995551.

The product of its (nonzero) digits is 2624400, while the sum is 55.

The square root of 6553991098 is about 80956.7236120633. The cubic root of 6553991098 is about 1871.4085775455.

The spelling of 6553991098 in words is "six billion, five hundred fifty-three million, nine hundred ninety-one thousand, ninety-eight".