4221361651640 has 64 divisors (see below), whose sum is σ = 10857232647360. Its totient is φ = 1447016970240.

The previous prime is 4221361651601. The next prime is 4221361651651. The reversal of 4221361651640 is 461561631224.

It is a congruent 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, 274847 + ... + 2918606.

It is an arithmetic number, because the mean of its divisors is an integer number (169644260115).

Almost surely, 2^{4221361651640} is an apocalyptic number.

4221361651640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4221361651640 is an abundant number, since it is smaller than the sum of its proper divisors (6635870995720).

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

4221361651640 is a wasteful number, since it uses less digits than its factorization.

4221361651640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198192 (or 3198188 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 4221361651640 in words is "four trillion, two hundred twenty-one billion, three hundred sixty-one million, six hundred fifty-one thousand, six hundred forty".