68477870992 has 40 divisors (see below), whose sum is σ = 134815774016. Its totient is φ = 33687916416.

The previous prime is 68477870983. The next prime is 68477871017. The reversal of 68477870992 is 29907877486.

It is a Harshad number since it is a multiple of its sum of digits (67).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 876973 + ... + 951859.

Almost surely, 2^68477870992 is an apocalyptic number.

It is an amenable number.

68477870992 is a deficient number, since it is larger than the sum of its proper divisors (66337903024).

68477870992 is a wasteful number, since it uses less digits than its factorization.

68477870992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75815 (or 75809 counting only the distinct ones).

The product of its (nonzero) digits is 85349376, while the sum is 67.

The spelling of 68477870992 in words is "sixty-eight billion, four hundred seventy-seven million, eight hundred seventy thousand, nine hundred ninety-two".