68642008466820 has 48 divisors (see below), whose sum is σ = 192234966251328. Its totient is φ = 18300979158400.

The previous prime is 68642008466803. The next prime is 68642008466833. The reversal of 68642008466820 is 2866480024686.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110827131 + ... + 111444770.

It is an arithmetic number, because the mean of its divisors is an integer number (4004895130236).

Almost surely, 2^{68642008466820} is an apocalyptic number.

68642008466820 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68642008466820 is an abundant number, since it is smaller than the sum of its proper divisors (123592957784508).

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

68642008466820 is a wasteful number, since it uses less digits than its factorization.

68642008466820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222277060 (or 222277058 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 60.

The spelling of 68642008466820 in words is "sixty-eight trillion, six hundred forty-two billion, eight million, four hundred sixty-six thousand, eight hundred twenty".