42109567776 has 72 divisors (see below), whose sum is σ = 119810278224. Its totient is φ = 14029349760.

The previous prime is 42109567771. The next prime is 42109567793. The reversal of 42109567776 is 67776590124.

42109567776 is a `hidden beast` number, since 4 + 2 + 1 + 0 + 9 + 567 + 7 + 76 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (42109567771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 542815 + ... + 615521.

It is an arithmetic number, because the mean of its divisors is an integer number (1664031642).

Almost surely, 2^42109567776 is an apocalyptic number.

It is an amenable number.

42109567776 is an abundant number, since it is smaller than the sum of its proper divisors (77700710448).

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

42109567776 is a wasteful number, since it uses less digits than its factorization.

42109567776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74734 (or 74723 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 54.

The spelling of 42109567776 in words is "forty-two billion, one hundred nine million, five hundred sixty-seven thousand, seven hundred seventy-six".