64642204466442 has 24 divisors (see below), whose sum is σ = 140059580300640. Its totient is φ = 21547175239080.

The previous prime is 64642204466431. The next prime is 64642204466467. The reversal of 64642204466442 is 24466440224646.

64642204466442 is a `hidden beast` number, since 6 + 46 + 42 + 20 + 44 + 66 + 442 = 666.

It is a super-2 number, since 2×64642204466442² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17087784 + ... + 20525027.

It is an arithmetic number, because the mean of its divisors is an integer number (5835815845860).

Almost surely, 2^{64642204466442} is an apocalyptic number.

64642204466442 is an abundant number, since it is smaller than the sum of its proper divisors (75417375834198).

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

64642204466442 is a wasteful number, since it uses less digits than its factorization.

64642204466442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37708298 (or 37708295 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 54.

The spelling of 64642204466442 in words is "sixty-four trillion, six hundred forty-two billion, two hundred four million, four hundred sixty-six thousand, four hundred forty-two".