68258015023 has 4 divisors (see below), whose sum is σ = 74463289128. Its totient is φ = 62052740920.

The previous prime is 68258014997. The next prime is 68258015051. The reversal of 68258015023 is 32051085286.

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

It is a cyclic number.

It is not a de Polignac number, because 68258015023 - 2¹⁷ = 68257883951 is a prime.

It is a super-2 number, since 2×68258015023² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68258015323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3102637036 + ... + 3102637057.

It is an arithmetic number, because the mean of its divisors is an integer number (18615822282).

Almost surely, 2^68258015023 is an apocalyptic number.

68258015023 is a deficient number, since it is larger than the sum of its proper divisors (6205274105).

68258015023 is a wasteful number, since it uses less digits than its factorization.

68258015023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6205274104.

The product of its (nonzero) digits is 115200, while the sum is 40.

The spelling of 68258015023 in words is "sixty-eight billion, two hundred fifty-eight million, fifteen thousand, twenty-three".