68100511 has 4 divisors (see below), whose sum is σ = 68149792. Its totient is φ = 68051232.

The previous prime is 68100479. The next prime is 68100517. The reversal of 68100511 is 11500186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11500186 = 2 ⋅5750093.

It is a cyclic number.

It is not a de Polignac number, because 68100511 - 2⁵ = 68100479 is a prime.

It is a super-2 number, since 2×68100511² = 9275359196922242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68100517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22506 + ... + 25351.

It is an arithmetic number, because the mean of its divisors is an integer number (17037448).

Almost surely, 2^68100511 is an apocalyptic number.

68100511 is a deficient number, since it is larger than the sum of its proper divisors (49281).

68100511 is a wasteful number, since it uses less digits than its factorization.

68100511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49280.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 68100511 is about 8252.3033754219. The cubic root of 68100511 is about 408.3665147361.

Adding to 68100511 its reverse (11500186), we get a palindrome (79600697).

The spelling of 68100511 in words is "sixty-eight million, one hundred thousand, five hundred eleven".