42783612964 has 9 divisors (see below), whose sum is σ = 74872046641. Its totient is φ = 21391599640.

The previous prime is 42783612961. The next prime is 42783612967. The reversal of 42783612964 is 46921638724.

The square root of 42783612964 is 206842.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (42783612961) and next prime (42783612967).

It can be written as a sum of positive squares in only one way, i.e., 16785275364 + 25998337600 = 129558^2 + 161240^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42783612961) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 361974 + ... + 465394.

Almost surely, 2^42783612964 is an apocalyptic number.

42783612964 is the 206842-nd square number.

It is an amenable number.

42783612964 is a deficient number, since it is larger than the sum of its proper divisors (32088433677).

42783612964 is an frugal number, since it uses more digits than its factorization.

42783612964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206846 (or 103423 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 52.

The spelling of 42783612964 in words is "forty-two billion, seven hundred eighty-three million, six hundred twelve thousand, nine hundred sixty-four".