42641622540 has 72 divisors (see below), whose sum is σ = 141105012048. Its totient is φ = 10337362560.

The previous prime is 42641622521. The next prime is 42641622571. The reversal of 42641622540 is 4522614624.

42641622540 is a `hidden beast` number, since 4 + 2 + 641 + 6 + 2 + 2 + 5 + 4 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 42641622495 and 42641622504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10766107 + ... + 10770066.

It is an arithmetic number, because the mean of its divisors is an integer number (1959791834).

Almost surely, 2^42641622540 is an apocalyptic number.

It is an amenable number.

42641622540 is an abundant number, since it is smaller than the sum of its proper divisors (98463389508).

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

42641622540 is a wasteful number, since it uses less digits than its factorization.

42641622540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21536199 (or 21536194 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 42641622540 in words is "forty-two billion, six hundred forty-one million, six hundred twenty-two thousand, five hundred forty".