6419529664 has 28 divisors (see below), whose sum is σ = 13488094944. Its totient is φ = 3020954624.

The previous prime is 6419529629. The next prime is 6419529679. The reversal of 6419529664 is 4669259146.

It is a super-2 number, since 2×6419529664² = 82420722213951905792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2949064 + ... + 2951239.

Almost surely, 2^6419529664 is an apocalyptic number.

6419529664 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6419529664 is an abundant number, since it is smaller than the sum of its proper divisors (7068565280).

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

6419529664 is a wasteful number, since it uses less digits than its factorization.

6419529664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5900332 (or 5900322 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 52.

The square root of 6419529664 is about 80121.9674246707. The cubic root of 6419529664 is about 1858.5221297208.

The spelling of 6419529664 in words is "six billion, four hundred nineteen million, five hundred twenty-nine thousand, six hundred sixty-four".