68106201511 has 4 divisors (see below), whose sum is σ = 68109202224. Its totient is φ = 68103200800.

The previous prime is 68106201487. The next prime is 68106201521. The reversal of 68106201511 is 11510260186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11510260186 = 2 ⋅5755130093.

It is a cyclic number.

It is not a de Polignac number, because 68106201511 - 2⁵ = 68106201479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68106201521) 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, 1466050 + ... + 1511791.

It is an arithmetic number, because the mean of its divisors is an integer number (17027300556).

Almost surely, 2^68106201511 is an apocalyptic number.

68106201511 is a deficient number, since it is larger than the sum of its proper divisors (3000713).

68106201511 is a wasteful number, since it uses less digits than its factorization.

68106201511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3000712.

The product of its (nonzero) digits is 2880, while the sum is 31.

Adding to 68106201511 its reverse (11510260186), we get a palindrome (79616461697).

The spelling of 68106201511 in words is "sixty-eight billion, one hundred six million, two hundred one thousand, five hundred eleven".