6550978290 has 32 divisors (see below), whose sum is σ = 15778319616. Its totient is φ = 1740708480.

The previous prime is 6550978283. The next prime is 6550978351. The reversal of 6550978290 is 928790556.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380122 + ... + 396981.

It is an arithmetic number, because the mean of its divisors is an integer number (493072488).

Almost surely, 2^6550978290 is an apocalyptic number.

6550978290 is an abundant number, since it is smaller than the sum of its proper divisors (9227341326).

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

6550978290 is a wasteful number, since it uses less digits than its factorization.

6550978290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777394.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The square root of 6550978290 is about 80938.1139513394. The cubic root of 6550978290 is about 1871.1217772935.

The spelling of 6550978290 in words is "six billion, five hundred fifty million, nine hundred seventy-eight thousand, two hundred ninety".