6551064994 has 16 divisors (see below), whose sum is σ = 9870377400. Its totient is φ = 3260968704.

The previous prime is 6551064973. The next prime is 6551065009. The reversal of 6551064994 is 4994601556.

It can be written as a sum of positive squares in 4 ways, for example, as 4965034369 + 1586030625 = 70463^2 + 39825^2 .

It is a super-2 number, since 2×6551064994² = 85832905111224440072, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471012 + ... + 484720.

Almost surely, 2^6551064994 is an apocalyptic number.

6551064994 is a deficient number, since it is larger than the sum of its proper divisors (3319312406).

6551064994 is a wasteful number, since it uses less digits than its factorization.

6551064994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14757.

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 6551064994 is about 80938.6495686702. The cubic root of 6551064994 is about 1871.1300321942.

The spelling of 6551064994 in words is "six billion, five hundred fifty-one million, sixty-four thousand, nine hundred ninety-four".