68924246820 has 576 divisors, whose sum is σ = 243952902144. Its totient is φ = 14362583040.

The previous prime is 68924246819. The next prime is 68924246887. The reversal of 68924246820 is 2864242986.

It is a super-2 number, since 2×68924246820² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 309077229 + ... + 309077451.

It is an arithmetic number, because the mean of its divisors is an integer number (423529344).

Almost surely, 2^68924246820 is an apocalyptic number.

68924246820 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 68924246820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121976451072).

68924246820 is an abundant number, since it is smaller than the sum of its proper divisors (175028655324).

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

68924246820 is a wasteful number, since it uses less digits than its factorization.

68924246820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 51.

The spelling of 68924246820 in words is "sixty-eight billion, nine hundred twenty-four million, two hundred forty-six thousand, eight hundred twenty".