68745837048840 has 640 divisors, whose sum is σ = 268912593100800. Its totient is φ = 15427113085440.

The previous prime is 68745837048839. The next prime is 68745837048853. The reversal of 68745837048840 is 4884073854786.

68745837048840 is a `hidden beast` number, since 6 + 8 + 74 + 5 + 8 + 3 + 70 + 488 + 4 + 0 = 666.

It is a super-2 number, since 2×68745837048840² (a number of 28 digits) contains 22 as substring.

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

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 384767607 + ... + 384946233.

It is an arithmetic number, because the mean of its divisors is an integer number (420175926720).

Almost surely, 2^{68745837048840} is an apocalyptic number.

68745837048840 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 68745837048840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134456296550400).

68745837048840 is an abundant number, since it is smaller than the sum of its proper divisors (200166756051960).

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

68745837048840 is a wasteful number, since it uses less digits than its factorization.

68745837048840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178967 (or 178954 counting only the distinct ones).

The product of its (nonzero) digits is 1156055040, while the sum is 72.

The spelling of 68745837048840 in words is "sixty-eight trillion, seven hundred forty-five billion, eight hundred thirty-seven million, forty-eight thousand, eight hundred forty".