42651911808 has 96 divisors (see below), whose sum is σ = 133893115200. Its totient is φ = 12924817920.

The previous prime is 42651911789. The next prime is 42651911831. The reversal of 42651911808 is 80811915624.

It is a happy number.

42651911808 is a `hidden beast` number, since 42 + 6 + 519 + 11 + 80 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1670248 + ... + 1695591.

It is an arithmetic number, because the mean of its divisors is an integer number (1394719950).

Almost surely, 2^42651911808 is an apocalyptic number.

42651911808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42651911808 is an abundant number, since it is smaller than the sum of its proper divisors (91241203392).

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

42651911808 is a wasteful number, since it uses less digits than its factorization.

42651911808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3365870 (or 3365855 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

It can be divided in two parts, 42651 and 911808, that added together give a palindrome (954459).

The spelling of 42651911808 in words is "forty-two billion, six hundred fifty-one million, nine hundred eleven thousand, eight hundred eight".