68655322520 has 16 divisors (see below), whose sum is σ = 154474475760. Its totient is φ = 27462128992.

The previous prime is 68655322507. The next prime is 68655322523. The reversal of 68655322520 is 2522355686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68655322523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858191492 + ... + 858191571.

It is an arithmetic number, because the mean of its divisors is an integer number (9654654735).

Almost surely, 2^68655322520 is an apocalyptic number.

It is an amenable number.

68655322520 is an abundant number, since it is smaller than the sum of its proper divisors (85819153240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68655322520 is a wasteful number, since it uses less digits than its factorization.

68655322520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716383074 (or 1716383070 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 68655322520 in words is "sixty-eight billion, six hundred fifty-five million, three hundred twenty-two thousand, five hundred twenty".