68415202969 has 3 divisors (see below), whose sum is σ = 68415464533. Its totient is φ = 68414941406.

The previous prime is 68415202963. The next prime is 68415202997. The reversal of 68415202969 is 96920251486.

The square root of 68415202969 is 261563.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96920251486 = 2 ⋅48460125743.

It is not a de Polignac number, because 68415202969 - 2⁵ = 68415202937 is a prime.

It is a super-2 number, since 2×68415202969² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68415202963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 130782 + ... + 392344.

Almost surely, 2^68415202969 is an apocalyptic number.

68415202969 is the 261563-rd square number.

68415202969 is the 130782-nd centered octagonal number.

It is an amenable number.

68415202969 is a deficient number, since it is larger than the sum of its proper divisors (261564).

68415202969 is an frugal number, since it uses more digits than its factorization.

68415202969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523126 (or 261563 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 68415202969 in words is "sixty-eight billion, four hundred fifteen million, two hundred two thousand, nine hundred sixty-nine".