68311661050 has 24 divisors (see below), whose sum is σ = 127528569792. Its totient is φ = 27223830000.

The previous prime is 68311661029. The next prime is 68311661057. The reversal of 68311661050 is 5016611386.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (68311661057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2507176 + ... + 2534275.

It is an arithmetic number, because the mean of its divisors is an integer number (5313690408).

Almost surely, 2^68311661050 is an apocalyptic number.

68311661050 is a deficient number, since it is larger than the sum of its proper divisors (59216908742).

68311661050 is a wasteful number, since it uses less digits than its factorization.

68311661050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5041734 (or 5041729 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 68311661050 in words is "sixty-eight billion, three hundred eleven million, six hundred sixty-one thousand, fifty".