68947537368 has 32 divisors (see below), whose sum is σ = 179863142400. Its totient is φ = 21983272608.

The previous prime is 68947537319. The next prime is 68947537369. The reversal of 68947537368 is 86373574986.

It is a super-2 number, since 2×68947537368² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 68947537299 and 68947537308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68947537369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62451928 + ... + 62453031.

It is an arithmetic number, because the mean of its divisors is an integer number (5620723200).

Almost surely, 2^68947537368 is an apocalyptic number.

It is an amenable number.

68947537368 is an abundant number, since it is smaller than the sum of its proper divisors (110915605032).

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

68947537368 is a wasteful number, since it uses less digits than its factorization.

68947537368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124904991 (or 124904987 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 66.

The spelling of 68947537368 in words is "sixty-eight billion, nine hundred forty-seven million, five hundred thirty-seven thousand, three hundred sixty-eight".