68945841298512 has 120 divisors (see below), whose sum is σ = 198173227117320. Its totient is φ = 22360170839040.

The previous prime is 68945841298487. The next prime is 68945841298517. The reversal of 68945841298512 is 21589214854986.

68945841298512 is a `hidden beast` number, since 6 + 8 + 9 + 4 + 5 + 8 + 4 + 12 + 98 + 512 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 45605115960336 + 23340725338176 = 6753156^2 + 4831224^2 .

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68945841298517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206884914 + ... + 207217902.

It is an arithmetic number, because the mean of its divisors is an integer number (1651443559311).

Almost surely, 2^{68945841298512} is an apocalyptic number.

It is an amenable number.

68945841298512 is an abundant number, since it is smaller than the sum of its proper divisors (129227385818808).

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

68945841298512 is a wasteful number, since it uses less digits than its factorization.

68945841298512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371901 (or 371892 counting only the distinct ones).

The product of its digits is 398131200, while the sum is 72.

The spelling of 68945841298512 in words is "sixty-eight trillion, nine hundred forty-five billion, eight hundred forty-one million, two hundred ninety-eight thousand, five hundred twelve".