42643506600 has 72 divisors (see below), whose sum is σ = 143211115710. Its totient is φ = 11371601280.

The previous prime is 42643506593. The next prime is 42643506649. The reversal of 42643506600 is 660534624.

42643506600 is a `hidden beast` number, since 4 + 2 + 6 + 43 + 5 + 0 + 6 + 600 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 19896230916 + 22747275684 = 141054^2 + 150822^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11843619 + ... + 11847218.

Almost surely, 2^42643506600 is an apocalyptic number.

42643506600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42643506600 is an abundant number, since it is smaller than the sum of its proper divisors (100567609110).

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

42643506600 is a wasteful number, since it uses less digits than its factorization.

42643506600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23690859 (or 23690847 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The spelling of 42643506600 in words is "forty-two billion, six hundred forty-three million, five hundred six thousand, six hundred".