68745219540 has 24 divisors (see below), whose sum is σ = 192486614880. Its totient is φ = 18332058528.

The previous prime is 68745219527. The next prime is 68745219541. The reversal of 68745219540 is 4591254786.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68745219541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572876770 + ... + 572876889.

It is an arithmetic number, because the mean of its divisors is an integer number (8020275620).

Almost surely, 2^68745219540 is an apocalyptic number.

68745219540 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68745219540 is an abundant number, since it is smaller than the sum of its proper divisors (123741395340).

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

68745219540 is a wasteful number, since it uses less digits than its factorization.

68745219540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145753671 (or 1145753669 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 68745219540 in words is "sixty-eight billion, seven hundred forty-five million, two hundred nineteen thousand, five hundred forty".