9715214515238 has 4 divisors (see below), whose sum is σ = 14572821772860. Its totient is φ = 4857607257618.

The previous prime is 9715214515229. The next prime is 9715214515333. The reversal of 9715214515238 is 8325154125179.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×9715214515238² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9715214515238.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2428803628808 + ... + 2428803628811.

It is an arithmetic number, because the mean of its divisors is an integer number (3643205443215).

Almost surely, 2^{9715214515238} is an apocalyptic number.

9715214515238 is a deficient number, since it is larger than the sum of its proper divisors (4857607257622).

9715214515238 is a wasteful number, since it uses less digits than its factorization.

9715214515238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857607257621.

The product of its digits is 3024000, while the sum is 53.

The spelling of 9715214515238 in words is "nine trillion, seven hundred fifteen billion, two hundred fourteen million, five hundred fifteen thousand, two hundred thirty-eight".