67120786636 has 12 divisors (see below), whose sum is σ = 121511769120. Its totient is φ = 32403138320.

The previous prime is 67120786591. The next prime is 67120786651. The reversal of 67120786636 is 63668702176.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289313620 + ... + 289313851.

It is an arithmetic number, because the mean of its divisors is an integer number (10125980760).

Almost surely, 2^67120786636 is an apocalyptic number.

It is an amenable number.

67120786636 is a deficient number, since it is larger than the sum of its proper divisors (54390982484).

67120786636 is a wasteful number, since it uses less digits than its factorization.

67120786636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578627504 (or 578627502 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 67120786636 in words is "sixty-seven billion, one hundred twenty million, seven hundred eighty-six thousand, six hundred thirty-six".