68641737712 has 10 divisors (see below), whose sum is σ = 132993366848. Its totient is φ = 34320868848.

The previous prime is 68641737707. The next prime is 68641737727. The reversal of 68641737712 is 21773714686.

It is a super-2 number, since 2×68641737712² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 68641737712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2145054288 + ... + 2145054319.

Almost surely, 2^68641737712 is an apocalyptic number.

It is an amenable number.

68641737712 is a deficient number, since it is larger than the sum of its proper divisors (64351629136).

68641737712 is a wasteful number, since it uses less digits than its factorization.

68641737712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4290108615 (or 4290108609 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 52.

The spelling of 68641737712 in words is "sixty-eight billion, six hundred forty-one million, seven hundred thirty-seven thousand, seven hundred twelve".