68763515520 has 512 divisors, whose sum is σ = 260526735360. Its totient is φ = 15095808000.

The previous prime is 68763515519. The next prime is 68763515533. The reversal of 68763515520 is 2551536786.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 68763515520.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62912094 + ... + 62913186.

It is an arithmetic number, because the mean of its divisors is an integer number (508841280).

Almost surely, 2^68763515520 is an apocalyptic number.

68763515520 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68763515520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130263367680).

68763515520 is an abundant number, since it is smaller than the sum of its proper divisors (191763219840).

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

68763515520 is a wasteful number, since it uses less digits than its factorization.

68763515520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 1512000, while the sum is 48.

The spelling of 68763515520 in words is "sixty-eight billion, seven hundred sixty-three million, five hundred fifteen thousand, five hundred twenty".