242644064621 has 16 divisors (see below), whose sum is σ = 286836031488. Its totient is φ = 200861564400.

The previous prime is 242644064599. The next prime is 242644064633. The reversal of 242644064621 is 126460446242.

It is not a de Polignac number, because 242644064621 - 2¹⁴ = 242644048237 is a prime.

It is a super-2 number, since 2×242644064621² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242644064021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1032125 + ... + 1245218.

It is an arithmetic number, because the mean of its divisors is an integer number (17927251968).

Almost surely, 2^242644064621 is an apocalyptic number.

It is an amenable number.

242644064621 is a deficient number, since it is larger than the sum of its proper divisors (44191966867).

242644064621 is a wasteful number, since it uses less digits than its factorization.

242644064621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2277872.

The product of its (nonzero) digits is 442368, while the sum is 41.

The spelling of 242644064621 in words is "two hundred forty-two billion, six hundred forty-four million, sixty-four thousand, six hundred twenty-one".