68650291799956 has 6 divisors (see below), whose sum is σ = 120138010649930. Its totient is φ = 34325145899976.

The previous prime is 68650291799941. The next prime is 68650291799959. The reversal of 68650291799956 is 65999719205686.

It can be written as a sum of positive squares in only one way, i.e., 66607078851856 + 2043212948100 = 8161316^2 + 1429410^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68650291799956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68650291799959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8581286474991 + ... + 8581286474998.

Almost surely, 2^{68650291799956} is an apocalyptic number.

It is an amenable number.

68650291799956 is a deficient number, since it is larger than the sum of its proper divisors (51487718849974).

68650291799956 is a wasteful number, since it uses less digits than its factorization.

68650291799956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17162572949993 (or 17162572949991 counting only the distinct ones).

The product of its (nonzero) digits is 3968092800, while the sum is 82.

The spelling of 68650291799956 in words is "sixty-eight trillion, six hundred fifty billion, two hundred ninety-one million, seven hundred ninety-nine thousand, nine hundred fifty-six".