69538979442240 has 2016 divisors, whose sum is σ = 317562583161600. Its totient is φ = 14448795863040.

The previous prime is 69538979442217. The next prime is 69538979442241. The reversal of 69538979442240 is 4224497983596.

69538979442240 is a `hidden beast` number, since 6 + 9 + 53 + 8 + 97 + 9 + 442 + 2 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (2016).

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

It is not an unprimeable number, because it can be changed into a prime (69538979442241) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 4149342981 + ... + 4149359739.

It is an arithmetic number, because the mean of its divisors is an integer number (157521122600).

Almost surely, 2^{69538979442240} is an apocalyptic number.

69538979442240 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 69538979442240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158781291580800).

69538979442240 is an abundant number, since it is smaller than the sum of its proper divisors (248023603719360).

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

69538979442240 is a wasteful number, since it uses less digits than its factorization.

69538979442240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16833 (or 16787 counting only the distinct ones).

The product of its (nonzero) digits is 940584960, while the sum is 72.

The spelling of 69538979442240 in words is "sixty-nine trillion, five hundred thirty-eight billion, nine hundred seventy-nine million, four hundred forty-two thousand, two hundred forty".