4215646644 has 24 divisors (see below), whose sum is σ = 10730737248. Its totient is φ = 1277468640.

The previous prime is 4215646639. The next prime is 4215646661. The reversal of 4215646644 is 4466465124.

It is a junction number, because it is equal to n+sod(n) for n = 4215646596 and 4215646605.

It is a congruent number.

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, 15968227 + ... + 15968490.

It is an arithmetic number, because the mean of its divisors is an integer number (447114052).

Almost surely, 2^4215646644 is an apocalyptic number.

4215646644 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4215646644 is an abundant number, since it is smaller than the sum of its proper divisors (6515090604).

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

4215646644 is a wasteful number, since it uses less digits than its factorization.

4215646644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31936735 (or 31936733 counting only the distinct ones).

The product of its digits is 552960, while the sum is 42.

The square root of 4215646644 is about 64928.0112432223. The cubic root of 4215646644 is about 1615.4297142399.

The spelling of 4215646644 in words is "four billion, two hundred fifteen million, six hundred forty-six thousand, six hundred forty-four".