42784066889 has 16 divisors (see below), whose sum is σ = 45554400000. Its totient is φ = 40042151424.

The previous prime is 42784066823. The next prime is 42784066901. The reversal of 42784066889 is 98866048724.

It is not a de Polignac number, because 42784066889 - 2¹² = 42784062793 is a prime.

It is a super-2 number, since 2×42784066889² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42784066189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10143509 + ... + 10147725.

It is an arithmetic number, because the mean of its divisors is an integer number (2847150000).

Almost surely, 2^42784066889 is an apocalyptic number.

It is an amenable number.

42784066889 is a deficient number, since it is larger than the sum of its proper divisors (2770333111).

42784066889 is a wasteful number, since it uses less digits than its factorization.

42784066889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432.

The product of its (nonzero) digits is 37158912, while the sum is 62.

The spelling of 42784066889 in words is "forty-two billion, seven hundred eighty-four million, sixty-six thousand, eight hundred eighty-nine".