42640395712 has 14 divisors (see below), whose sum is σ = 84614535368. Its totient is φ = 21320197824.

The previous prime is 42640395709. The next prime is 42640395769. The reversal of 42640395712 is 21759304624.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333128028 + ... + 333128155.

Almost surely, 2^42640395712 is an apocalyptic number.

It is an amenable number.

42640395712 is a deficient number, since it is larger than the sum of its proper divisors (41974139656).

42640395712 is an equidigital number, since it uses as much as digits as its factorization.

42640395712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666256195 (or 666256185 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The spelling of 42640395712 in words is "forty-two billion, six hundred forty million, three hundred ninety-five thousand, seven hundred twelve".