68990601011 has 4 divisors (see below), whose sum is σ = 68992434624. Its totient is φ = 68988767400.

The previous prime is 68990601007. The next prime is 68990601037. The reversal of 68990601011 is 11010609986.

It is a happy number.

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 68990601011 - 2² = 68990601007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68990601011.

It is not an unprimeable number, because it can be changed into a prime (68990601041) 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, 859160 + ... + 936021.

It is an arithmetic number, because the mean of its divisors is an integer number (17248108656).

Almost surely, 2^68990601011 is an apocalyptic number.

68990601011 is a deficient number, since it is larger than the sum of its proper divisors (1833613).

68990601011 is a wasteful number, since it uses less digits than its factorization.

68990601011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833612.

The product of its (nonzero) digits is 23328, while the sum is 41.

The spelling of 68990601011 in words is "sixty-eight billion, nine hundred ninety million, six hundred one thousand, eleven".