68709537120 has 96 divisors (see below), whose sum is σ = 247354345728. Its totient is φ = 15705036288.

The previous prime is 68709537103. The next prime is 68709537121. The reversal of 68709537120 is 2173590786.

It is a tau number, because it is divible by the number of its divisors (96).

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 68709537120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68709537121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10221274 + ... + 10227993.

It is an arithmetic number, because the mean of its divisors is an integer number (2576607768).

Almost surely, 2^68709537120 is an apocalyptic number.

68709537120 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68709537120 is an abundant number, since it is smaller than the sum of its proper divisors (178644808608).

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

68709537120 is a wasteful number, since it uses less digits than its factorization.

68709537120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20449292 (or 20449284 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 68709537120 in words is "sixty-eight billion, seven hundred nine million, five hundred thirty-seven thousand, one hundred twenty".