42735016820 has 24 divisors (see below), whose sum is σ = 90879532800. Its totient is φ = 16877626272.

The previous prime is 42735016811. The next prime is 42735016889. The reversal of 42735016820 is 2861053724.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13522160 + ... + 13525319.

It is an arithmetic number, because the mean of its divisors is an integer number (3786647200).

Almost surely, 2^42735016820 is an apocalyptic number.

It is an amenable number.

42735016820 is an abundant number, since it is smaller than the sum of its proper divisors (48144515980).

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

42735016820 is a wasteful number, since it uses less digits than its factorization.

42735016820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27047567 (or 27047565 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 42735016820 in words is "forty-two billion, seven hundred thirty-five million, sixteen thousand, eight hundred twenty".