68959522061 has 4 divisors (see below), whose sum is σ = 69009969312. Its totient is φ = 68909074812.

The previous prime is 68959522043. The next prime is 68959522063. The reversal of 68959522061 is 16022595986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68959522061 - 2⁶ = 68959521997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68959521994 and 68959522012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68959522063) 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, 25221575 + ... + 25224308.

It is an arithmetic number, because the mean of its divisors is an integer number (17252492328).

Almost surely, 2^68959522061 is an apocalyptic number.

It is an amenable number.

68959522061 is a deficient number, since it is larger than the sum of its proper divisors (50447251).

68959522061 is a wasteful number, since it uses less digits than its factorization.

68959522061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50447250.

The product of its (nonzero) digits is 2332800, while the sum is 53.

The spelling of 68959522061 in words is "sixty-eight billion, nine hundred fifty-nine million, five hundred twenty-two thousand, sixty-one".