42782051331 has 12 divisors (see below), whose sum is σ = 61859560152. Its totient is φ = 28492168896.

The previous prime is 42782051269. The next prime is 42782051341. The reversal of 42782051331 is 13315028724.

42782051331 is a `hidden beast` number, since 4 + 278 + 2 + 0 + 51 + 331 = 666.

It is not a de Polignac number, because 42782051331 - 2⁹ = 42782050819 is a prime.

It is a super-2 number, since 2×42782051331² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42782051341) 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, 2423941 + ... + 2441526.

It is an arithmetic number, because the mean of its divisors is an integer number (5154963346).

Almost surely, 2^42782051331 is an apocalyptic number.

42782051331 is a deficient number, since it is larger than the sum of its proper divisors (19077508821).

42782051331 is a wasteful number, since it uses less digits than its factorization.

42782051331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4866450 (or 4866447 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 42782051331 in words is "forty-two billion, seven hundred eighty-two million, fifty-one thousand, three hundred thirty-one".