42513215647 has 8 divisors (see below), whose sum is σ = 51444563616. Its totient is φ = 34296375552.

The previous prime is 42513215587. The next prime is 42513215651. The reversal of 42513215647 is 74651231524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-42513215647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42513215677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178626838 + ... + 178627075.

It is an arithmetic number, because the mean of its divisors is an integer number (6430570452).

Almost surely, 2^42513215647 is an apocalyptic number.

42513215647 is a deficient number, since it is larger than the sum of its proper divisors (8931347969).

42513215647 is a wasteful number, since it uses less digits than its factorization.

42513215647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357253937.

The product of its digits is 201600, while the sum is 40.

The spelling of 42513215647 in words is "forty-two billion, five hundred thirteen million, two hundred fifteen thousand, six hundred forty-seven".