6645201024 has 128 divisors (see below), whose sum is σ = 22006932480. Its totient is φ = 1726018560.

The previous prime is 6645201001. The next prime is 6645201061. The reversal of 6645201024 is 4201025466.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 6645200982 and 6645201000.

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, 82804 + ... + 141939.

It is an arithmetic number, because the mean of its divisors is an integer number (171929160).

Almost surely, 2^6645201024 is an apocalyptic number.

6645201024 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6645201024 is an abundant number, since it is smaller than the sum of its proper divisors (15361731456).

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

6645201024 is a wasteful number, since it uses less digits than its factorization.

6645201024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224778 (or 224766 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 6645201024 is about 81518.1024313005. The cubic root of 6645201024 is about 1880.0498915385.

The spelling of 6645201024 in words is "six billion, six hundred forty-five million, two hundred one thousand, twenty-four".