6551004864 has 112 divisors (see below), whose sum is σ = 17658616448. Its totient is φ = 2142885888.

The previous prime is 6551004839. The next prime is 6551004907. The reversal of 6551004864 is 4684001556.

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, 4025619 + ... + 4027245.

Almost surely, 2^6551004864 is an apocalyptic number.

6551004864 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6551004864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8829308224).

6551004864 is an abundant number, since it is smaller than the sum of its proper divisors (11107611584).

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

6551004864 is a wasteful number, since it uses less digits than its factorization.

6551004864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022 (or 2012 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 6551004864 is about 80938.2781136342. The cubic root of 6551004864 is about 1871.1243073544.

The spelling of 6551004864 in words is "six billion, five hundred fifty-one million, four thousand, eight hundred sixty-four".