68043615015 has 8 divisors (see below), whose sum is σ = 108869784048. Its totient is φ = 36289928000.

The previous prime is 68043615011. The next prime is 68043615023. The reversal of 68043615015 is 51051634086.

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

It is not a de Polignac number, because 68043615015 - 2² = 68043615011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68043615011) 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, 2268120486 + ... + 2268120515.

It is an arithmetic number, because the mean of its divisors is an integer number (13608723006).

Almost surely, 2^68043615015 is an apocalyptic number.

68043615015 is a deficient number, since it is larger than the sum of its proper divisors (40826169033).

68043615015 is a wasteful number, since it uses less digits than its factorization.

68043615015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536241009.

The product of its (nonzero) digits is 86400, while the sum is 39.

The spelling of 68043615015 in words is "sixty-eight billion, forty-three million, six hundred fifteen thousand, fifteen".