68451684384 has 24 divisors (see below), whose sum is σ = 179685671760. Its totient is φ = 22817228096.

The previous prime is 68451684383. The next prime is 68451684397. The reversal of 68451684384 is 48348615486.

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (68451684383) 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, 356519094 + ... + 356519285.

It is an arithmetic number, because the mean of its divisors is an integer number (7486902990).

Almost surely, 2^68451684384 is an apocalyptic number.

It is an amenable number.

68451684384 is an abundant number, since it is smaller than the sum of its proper divisors (111233987376).

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

68451684384 is a wasteful number, since it uses less digits than its factorization.

68451684384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713038392 (or 713038384 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 57.

The spelling of 68451684384 in words is "sixty-eight billion, four hundred fifty-one million, six hundred eighty-four thousand, three hundred eighty-four".