42911995920 has 40 divisors (see below), whose sum is σ = 133027188096. Its totient is φ = 11443198848.

The previous prime is 42911995909. The next prime is 42911995921. The reversal of 42911995920 is 2959911924.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (42911995921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89399752 + ... + 89400231.

Almost surely, 2^42911995920 is an apocalyptic number.

42911995920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42911995920 is an abundant number, since it is smaller than the sum of its proper divisors (90115192176).

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

42911995920 is a wasteful number, since it uses less digits than its factorization.

42911995920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178799999 (or 178799993 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 51.

The spelling of 42911995920 in words is "forty-two billion, nine hundred eleven million, nine hundred ninety-five thousand, nine hundred twenty".