42646408864 has 12 divisors (see below), whose sum is σ = 83960117514. Its totient is φ = 21323204416.

The previous prime is 42646408853. The next prime is 42646408891. The reversal of 42646408864 is 46880464624.

It can be written as a sum of positive squares in only one way, i.e., 42016800400 + 629608464 = 204980^2 + 25092^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666350107 + ... + 666350170.

Almost surely, 2^42646408864 is an apocalyptic number.

It is an amenable number.

42646408864 is a deficient number, since it is larger than the sum of its proper divisors (41313708650).

42646408864 is a wasteful number, since it uses less digits than its factorization.

42646408864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332700287 (or 1332700279 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 52.

The spelling of 42646408864 in words is "forty-two billion, six hundred forty-six million, four hundred eight thousand, eight hundred sixty-four".